NEW PRODUCT brief mention - L10,000 OTL OCL Linestage, ZA5000 Power Cable Zu-7r RCA.
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  1. #1
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    NEW PRODUCT brief mention - L10,000 OTL OCL Linestage, ZA5000 Power Cable Zu-7r RCA.

    I wanted to post my thoughts on a challenging room and system. In this unexpected journey I have effectively replaced my entire system, other than my trusted Allnic A6000 300b monoblock amplifiers.

    Daedalus Zeus are being delivered after a 2 year process next week. This will replace Ambience Reference 1600's.
    L 5000 DHT has been replced L-10000 OTL/OCL linestage
    New Waversa flagship dac
    Antipodes Reference Balanced unshielded to Allnic Zu7r RCA shielded.
    Wireworld Pure silver OCC to Allnic ZA5000. Latter is recommended for both high current AND digital applications, over the ZA3000.

    I have wonderful unshielded balanced cable - Antipodes Reference that for lack of a better term picked up pollution from the surrounding environment only because I have almost a 10 meter run. The L10,000 does have balanced outputs per demand from consumers but this adds in a transformer and no longer OTL device. In place of this, KS park was willing to take on the challenge with the Zu-7r RCA, unbalanced but Mu Metal shielded cable. Unlike the Antipodes, these cables are woven in their entirety which also had their own manufacturing challenges.

    Once the speakers arrive, I will have better update regarding which cables are best. That said, the Allnic RCA unbalanced can run 10 meter dead silent and with very clear presentation, without any coloration. I know of a 12 meter application that also has no issue. These cables are worth the audition.

    I have not rolled any tubes as yet. 300b x4 and 12AU7 . Takatsuki TA 300b are near and dear to me but to blow one tube and replace all 4 is too expensive for me. In my A6000's I run Emission Labs 300b XLS from 2012. So my suspicion is the preamp runs current at a low amperage and the tubes will last for some time. I have been told the 12AU7's have more of an influence than the 300b at a fraction of costs.

    Even with the standard tubes, there is no warm up required. What this pre-amp offers is bar none the greatest improvement to my system since this journey started in 2012. L4000 to L5000 DHT to L10,000. This upgrade tops any dac, and component upgrade. The clarity and presentation is on a level that no family member went unnoticed.

    This is just a quick update and more details are forthcoming in the near future. I desire the Daedalus speakers to give Allnic the best capability to shine.



    L-10000 OTL/OCL Preamplifier


    The L-10000 Preamplifier is a Direct Coupled OTL/OCL Tube Preamplifier.
    OTL/OCL means “Output Transformer Less” and “Output Capacitor Less”.
    In an OTL/OCL preamplifier, there is no coupling device between the preamplifier and the power amplifier , that is, the preamplifier’s final output tubes are directly connected to the power amplifier. Normally, an Output Capacitor or Output Transformer for separating AC music signal from the DC operating potential; if this is not done, the latter will destroy the power amplifier or loud speakers.
    But these two types of coupling devices are effectively obstacles to transmission that add their own character (color), increase distortion, and consume small signals according to physical efficiency theory. In addition, they limit signal dynamics.
    Because of all these adverse effects, OTL/OCL has been considered the best solution for amplifiers in order to maintain signal purity.
    * Removing these two coupling devices from the signal path, gives the best results.
    * No coloration is added to the musical signal.
    * Extremely detailed expression, natural harmonics and subtle musical decay are achieved.
    * There is the lowest distortion possible due to the absence of coupling parts.
    * The widest musical dynamics are attained.
    * Some circuit experts might worry about DC potential in the music signal, but there is no need to worry. Allnic uses a “floating power supply circuit” which prevents the creation of any DC potential in the first place.
    *The OTL/OCL circuit is basically SEPP, “Single Ended Push Pull”, so we need a “cancellation circuit”, which adjusts the balance of signal between the upper and lower power output tubes’ input grids.

    Newly developed 61 STEP CONSTANT IMPEDANCE BRIDGED TYPE ATTENUATOR, world premier, is installed inside, which contributes to L-10000’s different dimensional sound.
    Allnic uses the most sophisticated “Active Balanced Positive and Negative Feedback Circuit”, in which a 6AN8 pentode perfectly controls all the circuit’s entire operation with extremely low distortion and the greatest speed.



    Specifications
    • Input Impedance: 10 kohms(RCA, XLR)
    • Frequency Range: 5 Hz to 100 kHz
    • Voltage gain: +18dB
    • THD( 1kHz, 1V RMS) : less 0.03%
    • S/N ratio: -90dB
    • Maximum Output: 20V RMS(non-clipping)
    • Output Impedance: 200 ohms
    • Power consumption: 120W (230V 50/60 Hz)
    • Tubes: 300B x 4, 6AN8 x 2, 12AU7 x 2
    • Fuse: 3A/230v, 5A/120V
    • Dimension: 430mm x 450mm x 280mm WDH
    • Weight: 22kg/net

  2. Thanks joeinid thanked for this post
  3. #2
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    Re: NEW PRODUCT brief mention - L10,000 OTL OCL Linestage, ZA5000 Power Cable Zu-7r RCA.

    Can’t wait for more updates. Thank you for the information.
    Joe

    Avantgarde Duo XD, First Watt SIT-3, Luxman MQ-300,
    Pass XA25, McIntosh MCLK12, Job INTegrated, Cary 300B SE, Klipsch RP-160M, Klipsch RB-75, ModWright Ultimate Sony XA-5400ES, ASL Wave monos, Kimber Kables, Siltech, Cardas, Avanti Audio cables, Burmester 948, Linear Tube Audio MZ2, Bricasti M1SE, Naim Supernait 2, Lumin U1 mini, Wyred 4 Sound STP-SE Stage 2.

  4. #3
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    Re: NEW PRODUCT brief mention - L10,000 OTL OCL Linestage, ZA5000 Power Cable Zu-7r RCA.

    Update on L10,000. While this is a more complex wiring system than the L8000 DHT, involving a circuit board and necessitating a somewhat higher price point, it is my first experience that demonstrates how a preamp can really be the limiting (read detrimental) component in the signal pathway. This unit is single ended designed circuit, meaning in order to run balanced outputs, there exists a small insulation transformer, which separates the ground from cold signal. The output from this linestange, even when you need to run long distances - for me 28 feet, a well shielded unbalanced cable will be fine. What this unit offers is lost when balanced outputs are used. Now of interests, speaking with my source manufacturer, the output stages are of comparable sonic qualities. Using the same cable design, albeit a 3 meter balanced compared to 1.5 meter unbalanced (Antipodes Reference), the single ended INPUT to the linestage improves sound significantly. Much more open, airy, deep sound stage. This difference is not subtle. This demonstrates to me that ideally, equipment that is synergistic are ones of the same circuit topography. In other words, use single ended circuit design components with single ended cabling throughout the signal path.

    Regarding tubes - influence in signal path is 12AU7>>300b>>>6AN8. The latter is only one manufacturer and no shortage of tubes. Another advantage here is 12AU7's are not that expensive, with the most rare, coveted tube costing me $200. But what a difference. RT 12AU7WA Black Plate. Oh my, super quiet, super refined, soooo delicious. This one does no wrong at all, period. However, it no longer exists, and I think I am the only man on the planet with some of these. These are pretty much neutral, with allot of special thrown in. Air, density, energy, dimension, and super wet sounding. To me deep, soulful, sultry, passionate.

    I have some KRON 300b tubes on order. Stay tuned.

  5. #4
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    Re: NEW PRODUCT brief mention - L10,000 OTL OCL Linestage, ZA5000 Power Cable Zu-7r RCA.


  6. #5
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    Re: NEW PRODUCT brief mention - L10,000 OTL OCL Linestage, ZA5000 Power Cable Zu-7r RCA.






    Attached Images Attached Images
    Joe

    Avantgarde Duo XD, First Watt SIT-3, Luxman MQ-300,
    Pass XA25, McIntosh MCLK12, Job INTegrated, Cary 300B SE, Klipsch RP-160M, Klipsch RB-75, ModWright Ultimate Sony XA-5400ES, ASL Wave monos, Kimber Kables, Siltech, Cardas, Avanti Audio cables, Burmester 948, Linear Tube Audio MZ2, Bricasti M1SE, Naim Supernait 2, Lumin U1 mini, Wyred 4 Sound STP-SE Stage 2.

  7. #6
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    Re: NEW PRODUCT brief mention - L10,000 OTL OCL Linestage, ZA5000 Power Cable Zu-7r RCA.

    Very nice looking unit!
    Pre-amp/Digital: Audio Mirror T-61; T+A DAC 8 DSD; Falcon Tiki; W4S Recovery; Roon & HQPlayer
    Amplifiers: Audio Mirror REFLECTION SET 45 mono-blocks; T+A AMP 8; McIntosh MC754
    Speakers/Headphones: KEF R700, R400b; Dennis Had Dragon Inspire IHA-1; Focal Clear
    Other: Oppo BDP-105; Technics ST-9030; AudioQuest Niagara 1000