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April 21, 2019, 11:16 AM #1
Amps stable down to 1ohm or below...
For difficult impedance dip speakers like Martin Logan and some other electrostatic speakers, what are some amps that are stable down to 1ohm (or below)?
I would assume amps with a Bipolar output stage are going to have the edge over MOSFET/JFET output stages.
I’m guessing a few are:
* Gryphon
* Luxman
* Accuphase
* Soulution
* CH
* Bryston
* D’Ag
* SimAudio??
Any others come to mind?
Class D and Tube amps need not apply?My Systems: http://www.audioshark.org/showthread...481#post158481
"We can hear everything we measure, but we can't measure everything we hear. Let your ears be your guide."
Dealer for: Aqua Hi-Fi, Aurender, AudioQuest Cables & Power Products, Berkeley Audio, Block Audio (distributor), Boulder Amplifiers, Bowers & Wilkins (B&W), Bryston, Clarisys Audio Loudspeakers (distributor), Classe’ Audio, Degritter Record Cleaning Machines, Esoteric, Finite Elemente, FirstWatt, Focal Loudspeakers and Headphones, GigaFoil, Harbeth Loudspeakers, Hegel, HiFi Man, Innuos, ISO Acoustics, Keces Power Supplies, Kharma Loudspeakers and Electronics, Kuzma Turntables, Lumin, Luxman, Magico Loudspeakers, MBL Speakers & Electronics, MSB Technologies, MySonicLabs Phono Cartridges, Nordost Cables, Ortofon, Pass Labs, Quadraspire, Rega Turntables and Electronics, Shunyata Research, STAX, Stein Music Products, Stillpoints, Soulution, VAC, Vicoustics, Viva Audio, VPI Industries, WireWorld Cables.
https://suncoastaudio.com/
Phone: 941-932-0282
Facebook: https://www.facebook.com/Suncoast-Au...1105178279194/
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April 21, 2019, 11:39 AM #2
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Re: Amps stable down to 1ohm or below...
Possibly the Sanders Sound Systems ESL and Magtech amps? Designed for, but not limited to, electrostatic speakers.
http://www.sanderssoundsystems.com/p...k-ii-amplifier
http://www.sanderssoundsystems.com/p...rs/magtech-amp
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April 21, 2019, 11:40 AM #3My Systems: http://www.audioshark.org/showthread...481#post158481
"We can hear everything we measure, but we can't measure everything we hear. Let your ears be your guide."
Dealer for: Aqua Hi-Fi, Aurender, AudioQuest Cables & Power Products, Berkeley Audio, Block Audio (distributor), Boulder Amplifiers, Bowers & Wilkins (B&W), Bryston, Clarisys Audio Loudspeakers (distributor), Classe’ Audio, Degritter Record Cleaning Machines, Esoteric, Finite Elemente, FirstWatt, Focal Loudspeakers and Headphones, GigaFoil, Harbeth Loudspeakers, Hegel, HiFi Man, Innuos, ISO Acoustics, Keces Power Supplies, Kharma Loudspeakers and Electronics, Kuzma Turntables, Lumin, Luxman, Magico Loudspeakers, MBL Speakers & Electronics, MSB Technologies, MySonicLabs Phono Cartridges, Nordost Cables, Ortofon, Pass Labs, Quadraspire, Rega Turntables and Electronics, Shunyata Research, STAX, Stein Music Products, Stillpoints, Soulution, VAC, Vicoustics, Viva Audio, VPI Industries, WireWorld Cables.
https://suncoastaudio.com/
Phone: 941-932-0282
Facebook: https://www.facebook.com/Suncoast-Au...1105178279194/
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April 21, 2019, 02:18 PM #4
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Re: Amps stable down to 1ohm or below...
Coda as they appear to be the OEM for Sanders.
Main - JVC QL-Y7/Denon DL-301 Mk II, Gold Note PH-10, Jays CDT3 Mk3 , Auralic Aries G2.2, Holo May KTE, Supratek Cabernet, Kinki Studio EX-B7 monoblocks, Verity Audio Otello, (2) Rythmik F12SE, Audio Envy IC, SC & PC's, Triode Wire Lab PC's, Inakustik USB and I2S, (2) Puritan Audio Labs PSM-156 with Groundmaster City, Timbernation rack
Family Room - Oppo UDP-203, Auralic Aries, Aqua La Voce S3, Kinki Studio EX-M1+, Nola KO, (2) Rythmik F-12G, Wireworld SC & IC's, Neotech PC's, SurgeX SA-1810
Greenville, SC- Jays CDT2 Mk 3, Auralic Aries G1, Holo Spring 3 KTE, Supratek Chardonnay, Odyssey Audio Kismet Reference, Rosso Fiorentino Volterra 2, (2) RSL Speedwoofers, iFi Audio Power Station, Wireworld IC's, Inakustik USB and I2s, Triode Wire Lab SC, Triode Wire Lab PC's, Furutech NCF Clear Line, Timbernation rack.
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April 21, 2019, 02:18 PM #5My Systems: http://www.audioshark.org/showthread...481#post158481
"We can hear everything we measure, but we can't measure everything we hear. Let your ears be your guide."
Dealer for: Aqua Hi-Fi, Aurender, AudioQuest Cables & Power Products, Berkeley Audio, Block Audio (distributor), Boulder Amplifiers, Bowers & Wilkins (B&W), Bryston, Clarisys Audio Loudspeakers (distributor), Classe’ Audio, Degritter Record Cleaning Machines, Esoteric, Finite Elemente, FirstWatt, Focal Loudspeakers and Headphones, GigaFoil, Harbeth Loudspeakers, Hegel, HiFi Man, Innuos, ISO Acoustics, Keces Power Supplies, Kharma Loudspeakers and Electronics, Kuzma Turntables, Lumin, Luxman, Magico Loudspeakers, MBL Speakers & Electronics, MSB Technologies, MySonicLabs Phono Cartridges, Nordost Cables, Ortofon, Pass Labs, Quadraspire, Rega Turntables and Electronics, Shunyata Research, STAX, Stein Music Products, Stillpoints, Soulution, VAC, Vicoustics, Viva Audio, VPI Industries, WireWorld Cables.
https://suncoastaudio.com/
Phone: 941-932-0282
Facebook: https://www.facebook.com/Suncoast-Au...1105178279194/
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April 21, 2019, 02:58 PM #6
Re: Amps stable down to 1ohm or below...
Does Pass belong in that group?
Gary
Main: Lumin A1, Accuphase E-650, Tannoy Canterbury GR, Shunyata, Audience
Secondary: Lumin M1, Linton Heritage, Shunyata, Audience
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April 21, 2019, 03:00 PM #7
Re: Amps stable down to 1ohm or below...
My Systems: http://www.audioshark.org/showthread...481#post158481
"We can hear everything we measure, but we can't measure everything we hear. Let your ears be your guide."
Dealer for: Aqua Hi-Fi, Aurender, AudioQuest Cables & Power Products, Berkeley Audio, Block Audio (distributor), Boulder Amplifiers, Bowers & Wilkins (B&W), Bryston, Clarisys Audio Loudspeakers (distributor), Classe’ Audio, Degritter Record Cleaning Machines, Esoteric, Finite Elemente, FirstWatt, Focal Loudspeakers and Headphones, GigaFoil, Harbeth Loudspeakers, Hegel, HiFi Man, Innuos, ISO Acoustics, Keces Power Supplies, Kharma Loudspeakers and Electronics, Kuzma Turntables, Lumin, Luxman, Magico Loudspeakers, MBL Speakers & Electronics, MSB Technologies, MySonicLabs Phono Cartridges, Nordost Cables, Ortofon, Pass Labs, Quadraspire, Rega Turntables and Electronics, Shunyata Research, STAX, Stein Music Products, Stillpoints, Soulution, VAC, Vicoustics, Viva Audio, VPI Industries, WireWorld Cables.
https://suncoastaudio.com/
Phone: 941-932-0282
Facebook: https://www.facebook.com/Suncoast-Au...1105178279194/
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April 21, 2019, 04:10 PM #8
Re: Amps stable down to 1ohm or below...
Hegel?
Vivid Audio - Burmester - Hegel - Marantz - Oppo - Pioneer 60" - Wireworld
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April 21, 2019, 04:11 PM #9"No summit worth climbing is easily attained."
--------------------------------------------
Source: MSB Select II DAC with Two Mono Powerbases and Femto 33 Clock; Renderer V2 Digital Input Module and Roon Nucleus Plus; MSB UMT V Signature Transport
Amps: Vandersteen M7-HPA Mono Amps; MSB M204 Mono Amps
Speakers: Vandersteen Model 7 Mk2
Power: Two AudioQuest Niagara 5000’s with AudioQuest Dragon and Hurricane Power Cords
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April 21, 2019, 04:12 PM #10My Systems: http://www.audioshark.org/showthread...481#post158481
"We can hear everything we measure, but we can't measure everything we hear. Let your ears be your guide."
Dealer for: Aqua Hi-Fi, Aurender, AudioQuest Cables & Power Products, Berkeley Audio, Block Audio (distributor), Boulder Amplifiers, Bowers & Wilkins (B&W), Bryston, Clarisys Audio Loudspeakers (distributor), Classe’ Audio, Degritter Record Cleaning Machines, Esoteric, Finite Elemente, FirstWatt, Focal Loudspeakers and Headphones, GigaFoil, Harbeth Loudspeakers, Hegel, HiFi Man, Innuos, ISO Acoustics, Keces Power Supplies, Kharma Loudspeakers and Electronics, Kuzma Turntables, Lumin, Luxman, Magico Loudspeakers, MBL Speakers & Electronics, MSB Technologies, MySonicLabs Phono Cartridges, Nordost Cables, Ortofon, Pass Labs, Quadraspire, Rega Turntables and Electronics, Shunyata Research, STAX, Stein Music Products, Stillpoints, Soulution, VAC, Vicoustics, Viva Audio, VPI Industries, WireWorld Cables.
https://suncoastaudio.com/
Phone: 941-932-0282
Facebook: https://www.facebook.com/Suncoast-Au...1105178279194/
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April 21, 2019, 04:12 PM #11
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- Sacramento
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- 1,129
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April 21, 2019, 07:55 PM #12
Re: Amps stable down to 1ohm or below...
Coda does act as an OEM designer and/or manufacturer for several brands of high end electronics. The products they design for other brands are often customized in specific ways and differ from Coda branded products in order to best meet the needs of the other company. If you look at the design and construction of Coda amps and preamps and compare them to those from Sanders and Legacy for example there are many obvious similarities which are beyond coincidental. So Sanders claim to manufacture their own amps may indeed be true, but their design is apparently at some level associated with Coda. It's possible that Coda could be hired as a design consultant by Sanders for their amplifiers and that would still allow them to be manufactured by Sanders in Colorado.
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April 21, 2019, 08:26 PM #13
Re: Amps stable down to 1ohm or below...
Borresen Acoustics Loudspeakers, Borresen Model 01 Compact monitor loudspeakers with Ansuz Darkz T2s Supreme resonance control, Audio Video Manufaktur GmbH (AVM) Inspiration amplifier & streamer, Innuos Zen MKII music server, Ansuz Acoustics cables & accessories. Please visit my system thread hosted on Audioshark for more details. Disclosure: The author is materially connected to Ansuz, Aavik & Borresen Acoustics via friendship with an owner.
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April 21, 2019, 08:31 PM #14
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April 21, 2019, 08:38 PM #15
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- Mar 2017
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- North Carolina
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- 810
Re: Amps stable down to 1ohm or below...
Coda makes excellent products at relative bargain prices. Principals worked with Nelson Pass at Threshold back in the day. My understanding is that they sell more overseas than here in the U.S. and that they like to develop and build more than market.
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April 21, 2019, 08:41 PM #16
Re: Amps stable down to 1ohm or below...
Ok, OTHER than Coda?
Luxman is looking like a good option.
Sent from my iPhone using TapatalkMy Systems: http://www.audioshark.org/showthread...481#post158481
"We can hear everything we measure, but we can't measure everything we hear. Let your ears be your guide."
Dealer for: Aqua Hi-Fi, Aurender, AudioQuest Cables & Power Products, Berkeley Audio, Block Audio (distributor), Boulder Amplifiers, Bowers & Wilkins (B&W), Bryston, Clarisys Audio Loudspeakers (distributor), Classe’ Audio, Degritter Record Cleaning Machines, Esoteric, Finite Elemente, FirstWatt, Focal Loudspeakers and Headphones, GigaFoil, Harbeth Loudspeakers, Hegel, HiFi Man, Innuos, ISO Acoustics, Keces Power Supplies, Kharma Loudspeakers and Electronics, Kuzma Turntables, Lumin, Luxman, Magico Loudspeakers, MBL Speakers & Electronics, MSB Technologies, MySonicLabs Phono Cartridges, Nordost Cables, Ortofon, Pass Labs, Quadraspire, Rega Turntables and Electronics, Shunyata Research, STAX, Stein Music Products, Stillpoints, Soulution, VAC, Vicoustics, Viva Audio, VPI Industries, WireWorld Cables.
https://suncoastaudio.com/
Phone: 941-932-0282
Facebook: https://www.facebook.com/Suncoast-Au...1105178279194/
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April 21, 2019, 08:57 PM #17
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- Aug 2013
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- 334
Re: Amps stable down to 1ohm or below...
Pass XA series
the large Chords
the large Vitus
Boulder
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April 21, 2019, 10:59 PM #18
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- Nov 2013
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- St. Louis, MO, USA
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- 3,067
Re: Amps stable down to 1ohm or below...
I would have thought Pass since he began building amps with the intent to drive his own speaker.
I don't know about Krell of today but definitely Krell of the earlier. I knew of a guy who used them to drive Apogees.
What about ATI. Those amps are beasts, even requiring two power cords with 20 amp ends.
I know tubes typically need not apply but the guy with the Apogees went to some tube amp called NAT he said drove them, anyone know of them?Aurender ACS10 w/Audioquest Diamond USB, Esoteric N05xd
Mark Levinson #526, 534 & JBL 4367's
Clearaudio Performance DC w/Maestro cart
Clarus Concerto & their Crimson cables
HT: Marantz AV8003, Linn 5125, JBL SAM3ha, Revel s30,
SVS PC13 Ultra
Transparent, Analysis Plus & Tributaries. PS Audio filtering
Sony XBR-75X940D & BDP
Parasound P6, MBL 8006b, Artisan speakers/subwoofer
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April 22, 2019, 01:59 AM #19
Amps stable down to 1ohm or below...
NAT is a manufacturer from Serbia.
They are well lauded for tube amps, e.g. the NAT Symmetrical preamp an the NAT Transmitter power amp.
Sent from my iPad using Tapatalk“Life’s too short to listen to bad audio.”
Big rig: Brinkmann Taurus DD TT + 12.1 arm + Lyra Etna Lambda SL MC + HRS M3X2/ Cardas Clear Beyond phono/ Stillpoints LPI/ Brinkmann Edison mk2 phono + RöNT II Tube PS/ Synology NAS with Roon + HD Plex linear PSU + Shunyata HD/ AQ Vodka RJ45 + Aqvox Network Switch SE + AQ Diamond RJ45 into DAC/ Brinkmann Nyquist mk2/ Audionet Humboldt/ Cardas Clear Beyond ICs/ Kharma DB9-S 1.1 LS/ Inakustik Reference LS 4004 AIR/ Audioquest Niagara 5000/ Shunyata Alpha power (HC, Analogue, Digital)/ Finite Elemente Pagode Rack/ Stillpoints Ultra SS/ Vicoustic panels + Stillpoints Aperture II.
Small rig: Naim UnitiServe/ Curious USB/ Tidal/ Linn Klimax DS3/ Shunyata Power cable/ Pass Labs INT-60/ Acoustic Zen Silver Reference II/ HiD Diamond 8/ Harbeth 30.2 40th Anniversary/ Shunyata Venom EU7 & Venom 3 HD.
HP rig: MacBookAir/ Tidal/ Auralic Gemini 2000/ Sbooster LPSU/ Audeze LCD-2 Classic + WyWires Red/ Shunyata HD/ Shunyata Hydra 2/ Shunyata Venom.
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April 22, 2019, 03:16 AM #20
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- Jun 2013
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- St Louis, MO
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- 145
Re: Amps stable down to 1ohm or below...
A couple more for your list: Electrocompaniet & Lamm (Hybrid)
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April 22, 2019, 03:35 AM #21
Re: Amps stable down to 1ohm or below...
fm acoustics 115:
operating with music or continuous toneburst:
550 Wpeak into 8 Ohm
1000 Wpeak into 4 Ohm
1800 Wpeak into 2 Ohm
275 WRMS into 8 Ohm
500 WRMS into 4 Ohm
900 WRMS into 2 Ohm
Max. Output Current:
Unlimited repetitive peak output current. More than 35 A continuous. No output or DC fuses, absolutely no form of current-, voltage- or any other kind of limiting.
Load Impedance:
No minimum impedance.
The amplifier is designed for 1 Ohm to 10’000 Ohm systems.
It can drive any speaker impedance (even below 1 Ohm) with dynamic (music) signals without any limiting, compression or other negative effects on the audio signal.
Despite this, the amplifier is fully protected against short circuits, open circuits and all other adverse conditions via unique onboard circuitry that continuously surveys all important parameters.
https://www.audiolimits.com/Helix-tu...acoustics.htmlhifi:
power: Audioplan Powerstar, Audioplan Finefilter, Audioplan Powerplant, Powercord
tube amp: Jadis DA 50 Signature RC, Line Magnetic 508ia
speaker: Living Voice Avatar 2
turntable: Pro-Ject Xtension 10 + Ortofon Quintet Black MC
phono stage: Remton 383 MKII
cables: Audioplan Musicable bic 7a, Profigold, Wilbrand
home-cinema: Sony blu-ray, Yamaha rx v2700, Heco Metas 700 (4x), Heco center
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April 22, 2019, 08:36 AM #22
- Join Date
- Oct 2017
- Posts
- 175
Re: Amps stable down to 1ohm or below...
symphonic line kraft and for a taste of greatness at budget amp pricing: odyssey audio amps. though klaus has been taking them a bit of a different direction than their symphonic line big brothers, he is very upfront about his amps being quality but the SL being _that_ much better
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April 22, 2019, 09:55 AM #23
Re: Amps stable down to 1ohm or below...
There are some less known - or a least talked about - products which are likely to perform into low impedance loads. Two examples are:
1. Karan Acoustics power amplifiers, for example the KA M 900 and KA S 600
2. Plinius Audio, for example the Reference A-300Borresen Acoustics Loudspeakers, Borresen Model 01 Compact monitor loudspeakers with Ansuz Darkz T2s Supreme resonance control, Audio Video Manufaktur GmbH (AVM) Inspiration amplifier & streamer, Innuos Zen MKII music server, Ansuz Acoustics cables & accessories. Please visit my system thread hosted on Audioshark for more details. Disclosure: The author is materially connected to Ansuz, Aavik & Borresen Acoustics via friendship with an owner.
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April 22, 2019, 10:01 AM #24
Re: Amps stable down to 1ohm or below...
Any of the McIntosh autoformer amps will be stable into really low impedance complex loads. It's not just less than 1 ohm, its also the fact that some of these speakers present highly reactive loads. Electrostats are almost entirely capacitive at high frequencies.
I would really like to see what a 1 kHz or 10 kHz squarewave looks like when any of these amplifiers drive a capacitive load < 1 ohm. That will separate the posers from the real deal.
TomTom
Audio:
Amati Futura Mains
Amati Homage VOX Center,
Proac Response 1sc Rears,
Three MC2301's for L,C,R
MC 602 for the rears
C 1100, MX 151, MCD 1100, MR 77
Nottingham Dais with Sumiko Palo Santos Presentation
SurfacePro 3, JRiver, WW Starlight Platinum USB, Schiit Yggdrasil, Benchmark DAC3 HGC
Video:
MX 151, OppO BDP-95, JVC RS-500 DILA projector, 106" diagonal Stewart Luxus Screenwall Deluxe with Studiotek 130 G3 material.
Lake House:
Ohm F, MC 275V, C2300, MR 80, Rega P3
OnDeck:
McIntosh MAC 4300v
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April 22, 2019, 10:02 AM #25
Re: Amps stable down to 1ohm or below...
My Systems: http://www.audioshark.org/showthread...481#post158481
"We can hear everything we measure, but we can't measure everything we hear. Let your ears be your guide."
Dealer for: Aqua Hi-Fi, Aurender, AudioQuest Cables & Power Products, Berkeley Audio, Block Audio (distributor), Boulder Amplifiers, Bowers & Wilkins (B&W), Bryston, Clarisys Audio Loudspeakers (distributor), Classe’ Audio, Degritter Record Cleaning Machines, Esoteric, Finite Elemente, FirstWatt, Focal Loudspeakers and Headphones, GigaFoil, Harbeth Loudspeakers, Hegel, HiFi Man, Innuos, ISO Acoustics, Keces Power Supplies, Kharma Loudspeakers and Electronics, Kuzma Turntables, Lumin, Luxman, Magico Loudspeakers, MBL Speakers & Electronics, MSB Technologies, MySonicLabs Phono Cartridges, Nordost Cables, Ortofon, Pass Labs, Quadraspire, Rega Turntables and Electronics, Shunyata Research, STAX, Stein Music Products, Stillpoints, Soulution, VAC, Vicoustics, Viva Audio, VPI Industries, WireWorld Cables.
https://suncoastaudio.com/
Phone: 941-932-0282
Facebook: https://www.facebook.com/Suncoast-Au...1105178279194/
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April 22, 2019, 10:39 AM #26
Re: Amps stable down to 1ohm or below...
On the 2 ohm tap modern McIntosh amps are stable to way less than 1 ohm. The autoformers help isolate difficult loads and present a reasonable load line to the amplifier circuitry.
When I was looking at electrostats, I tested my MC 602 into a 0.5 ohm resistive load and also a 10 uF film cap with 10 kHz square waves at 100 Watts. No overshoot or ringing on the 0.5 ohm load and some minor ringing into the 10 uF cap. Superb stability.
TomTom
Audio:
Amati Futura Mains
Amati Homage VOX Center,
Proac Response 1sc Rears,
Three MC2301's for L,C,R
MC 602 for the rears
C 1100, MX 151, MCD 1100, MR 77
Nottingham Dais with Sumiko Palo Santos Presentation
SurfacePro 3, JRiver, WW Starlight Platinum USB, Schiit Yggdrasil, Benchmark DAC3 HGC
Video:
MX 151, OppO BDP-95, JVC RS-500 DILA projector, 106" diagonal Stewart Luxus Screenwall Deluxe with Studiotek 130 G3 material.
Lake House:
Ohm F, MC 275V, C2300, MR 80, Rega P3
OnDeck:
McIntosh MAC 4300v
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April 22, 2019, 12:41 PM #27
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- Jan 2014
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- Massachusetts
- Posts
- 101
Re: Amps stable down to 1ohm or below...
Audio Flight #4 and #8? Myles Astor reviewed #4 several years ago.
In market for SS amp so visiting local Audia Flight dealer next week. Should be fun!
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April 22, 2019, 04:28 PM #28
Re: Amps stable down to 1ohm or below...
Obviously this is some kind of marketing. The math doesn't work out, unless this amp is more powerful than advertised. If it really can support 35amps then it can make 2450 watts into 2 ohms but we see from the above specs it does not. So I suspect the 35 amp figure is really what happens for 10mS when the power supply is shorted and does not represent the actual current present in the output section. math: Power=current(squared) x resistance. so 2450 = 35(squared) x 2. By that measure we make an OTL that does 50 amps...
And of course it will limit current when its abilities are exceeded. It also has a minimum impedance, else the short protection for the amplifier would not function.
*****************
There is the question of what is meant by 'stability'. Normally that means the amp won't oscillate. So I don't think the term 'stable' is being used correctly in this thread. Further, the speaker in question has a 1 ohm impedance above 15KHz being an electrostatic. Its impedance will be higher at frequencies less than 15KHz. Because there is so little energy at this frequency, far more amplifiers will work with this speaker than are listed in this thread- including many tube amps that don't have taps below 4 ohms!
Many of the better-built Japanese receivers made in the late 1970s will work fine (IOW no oscillation) on this speaker. Seriously the power that the amp makes is likely the bigger issue- how much power does the amp need to fill the room? That is less clear but IIRC Sanders made some pretty big amps. Any 100 solid state amp made today will otherwise work fine. The ability to double power as impedance is cut in half is not required here either- again, the energy at 15KHz and above is slight. In addition, there is the question of whether that is a desirable trait, since ESLs generally speaking have an impedance curve based on a capacitor rather than a speaker in a box. On that account, the impedance curve of an ESL is not also a map of its efficiency like it is with most box speakers. Many ESLs work better if the amp can make the same power in to 4 ohms as it does into 8; otherwise what can happen is the amp will be too bright on top!
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April 22, 2019, 10:14 PM #29
- Join Date
- Jun 2014
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- South Eastern Mass.
- Posts
- 21
Re: Amps stable down to 1ohm or below...
Emm MTRX mono blocks ... stable under 1ohm and sound great !
Esoteric Gradioso P1/D1/G-01 clock, EMM Labs MTRX Mono Blocks with PRE, EMM DA2 and TX2 , NS1 streamer, Revel Salon IIs with Stillpoints, Artesania Rack, HB Marble, Stage 3 Krakens & Minotaurs, Nordost Valhalla clock cables , Matthew Bond Signature Silver Interconnects , Tara Evolution SC and ICs .
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April 23, 2019, 02:46 AM #30
Re: Amps stable down to 1ohm or below...
Balanced Audio Technology should do the trick! At least the big solid state amps...
Triangle Magellan Concerto 2 < AQ Everest < Vitus Audio SS-010 Mk2 < AQ Dragon HC < AQ WEL Signature XLR < Chord Qutest w UpTone JS-2 & AQ Dragon Source < SOtM tX-USBultra w 75Ohm Master Clock Input, Paul Hynes SR5-12 Turbo XL & AQ Dragon Source < AQ Diamond USB < Aurender N-100H w AQ Dragon Source < Gryphon PowerZone w AQ NRG-Wild < Solid Tech Hybrid < Ansuz Darkz D-TC, Darkz D2, Stillpoints Ultra SS, Omicron Harmonic Stabilizer & Gold SE < Furutech FT-SWS < Synergistic Research Blue Quantum Fuse
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April 23, 2019, 06:34 PM #31
Re: Amps stable down to 1ohm or below...
YES! Pass Labs does belong in the group. Top 3 I say from many years of listening and owning both Pass Labs and Martin Logans for years. My XA160.5 never runs out of steam no matter how loud I play them!
George
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Aurender ACS10 Music Server > Holo Audio May KTE R2R Ladder DAC > Pass Labs XP-30 Preamp > Pass Labs XA160.5 Class A Mono Blocks > Martin Logan Renaissance ELS 15A Speakers
Powered By 2X BPT 3.5 Signature Plus Ultra Isolators | Shunyata Research Hydra Triton + Typhon | Shunyata Hydra 2 Power Conditioner
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April 23, 2019, 06:46 PM #32
Re: Amps stable down to 1ohm or below...
My Systems: http://www.audioshark.org/showthread...481#post158481
"We can hear everything we measure, but we can't measure everything we hear. Let your ears be your guide."
Dealer for: Aqua Hi-Fi, Aurender, AudioQuest Cables & Power Products, Berkeley Audio, Block Audio (distributor), Boulder Amplifiers, Bowers & Wilkins (B&W), Bryston, Clarisys Audio Loudspeakers (distributor), Classe’ Audio, Degritter Record Cleaning Machines, Esoteric, Finite Elemente, FirstWatt, Focal Loudspeakers and Headphones, GigaFoil, Harbeth Loudspeakers, Hegel, HiFi Man, Innuos, ISO Acoustics, Keces Power Supplies, Kharma Loudspeakers and Electronics, Kuzma Turntables, Lumin, Luxman, Magico Loudspeakers, MBL Speakers & Electronics, MSB Technologies, MySonicLabs Phono Cartridges, Nordost Cables, Ortofon, Pass Labs, Quadraspire, Rega Turntables and Electronics, Shunyata Research, STAX, Stein Music Products, Stillpoints, Soulution, VAC, Vicoustics, Viva Audio, VPI Industries, WireWorld Cables.
https://suncoastaudio.com/
Phone: 941-932-0282
Facebook: https://www.facebook.com/Suncoast-Au...1105178279194/
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April 23, 2019, 07:07 PM #33
Re: Amps stable down to 1ohm or below...
George
-----------------------
Aurender ACS10 Music Server > Holo Audio May KTE R2R Ladder DAC > Pass Labs XP-30 Preamp > Pass Labs XA160.5 Class A Mono Blocks > Martin Logan Renaissance ELS 15A Speakers
Powered By 2X BPT 3.5 Signature Plus Ultra Isolators | Shunyata Research Hydra Triton + Typhon | Shunyata Hydra 2 Power Conditioner
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April 23, 2019, 07:47 PM #34
Re: Amps stable down to 1ohm or below...
Martin Logans only exhibit an impedance of 1 ohm over a relatively narrow bandwidth, so they don't present an overall load anywhere near that low to the power amp. Their nominal impedance rating is more realistic in evaluating the load they present to an amp instead of just focusing on the lowest point of their impedance curve.
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April 25, 2019, 01:51 PM #35
Re: Amps stable down to 1ohm or below...
Heck, most tube amps of 100 watts or more can do the job assisted by a set of ZEROs (www.zeroimpedance.com). That's what we suggest when someone wants to use our amps on Martin Logans.
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April 25, 2019, 02:21 PM #36
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April 25, 2019, 02:23 PM #37
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April 25, 2019, 02:52 PM #38
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April 25, 2019, 02:55 PM #39
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April 25, 2019, 02:57 PM #40
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April 25, 2019, 02:58 PM #41
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April 25, 2019, 03:00 PM #42
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April 25, 2019, 03:02 PM #43
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April 25, 2019, 03:04 PM #44
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April 25, 2019, 03:06 PM #45
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April 25, 2019, 03:13 PM #46
Re: Amps stable down to 1ohm or below...
Here is their claim taken directly from their website:
Sanders has solved these problems by developing a voltage regulator that is essentially 100% efficient. There is no heat dissipated by the regulator system. There is no high-power/high-voltage switching that causes heat generation or RF problems.
The regulator in the Magtech amplifier maintains a stable voltage regardless of load or reasonable changes in the line voltage feeding the amplifier. It runs stone cold, produces zero RF energy, and is simple and reliable.
Unlike other amplifiers, the distortion in the Magtech amplifier is virtually unchanged regardless of power level. The bias is stable regardless of load.
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April 25, 2019, 03:18 PM #47
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April 25, 2019, 03:23 PM #48
Re: Amps stable down to 1ohm or below...
I wasn’t speaking about ML.
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April 25, 2019, 03:26 PM #49
Re: Amps stable down to 1ohm or below...
Yes i have seen that before , its a good amp at 4 ohm on maggies, its not a 1 ohm load amp for sure.
As to the web site claims, i haven't seen any bench testing to confirm , maybe he is running quantum nanotech technology beyond the norm ..
Sanders uses like NP, a very large output stage , 10pr's i think so it will drive a 1 ohm load but sinks are pretty small for any continuous usage at that load ..
Regards
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April 25, 2019, 03:30 PM #50
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AudioShark forum is a leading forum site for High End Audio Discussion, Stereo System Discussion, Home Theater System Discussion, Best Home Stereo System Discussion, Home Theater Installation Discussion etc.
The AudioShark forum was created for sharing the passion of high-end Audio. We have Audiophiles from all over the world participating and sharing their knowledge. From novice to experts, you will find a friendly environment for discussing about High End Audio, Stereo System, Home Theater System, Home Stereo System, Home Theater Installation, Amplifiers, Speakers, Subwoofers, Integrated System, Acoustic treatments & Digital Room Corrections and many more.
At AudioShark, we also have incorporated an exciting Marketplace where members can peruse terrific buys on used gear, as well as meet dealers and discuss the purchase of new gear.
We are as crazy about this hobby as you are! So come on in and join us! Audioshark.org the Friendliest Audio Forum!
Industry Participation Disclosure : The owner and administrator of Audioshark is the owner of Suncoast Audio LLC in Sarasota Florida. Suncoast Audio has a full brick and mortar presence in Sarasota with several great show rooms with many world class brands. More information can be found at http://www.suncoastaudio.com
Audioshark is a community of like minded individuals. Audioshark welcomes participation from all manufacturers and owners of all brands and products. It is our belief that online forums provide a community of like minded audiophiles and music lovers to encourage the growth of this wonderful hobby.
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