Dpod4
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- Apr 5, 2013
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- #1
We spend a lot of time sharing how we evolve our reference systems but don't talk much about desktop or second systems.
I am at my home in Bend this weekend and spent yesterday afternoon changing up my second system.
The initial system started with a perfect wave dac mkii with bridge feeding a CJ Pr350 amp and the KEF LS50 speakers. Then added a sugden headphone amp that did double duty as a preamp.
Then I sold the CJ and inserted the Air Tight ATC-2 preamp and ATM-2 amp. Yesterday I added the REL habitat wireless sub and I A/B'd the Air Tight amp and my Marantz MA9S1 mono blocks that I just got back from Jennifer Crock at Jena Labs. She did a full mod on them replacing many inferior parts and wiring most in the final signal stages, and she replaced all the jacks with top flight Cardas jacks as well as the iec, and she removed the attenuator function from the path. Tried them in my reference system and it was definitely an upgrade that was significant in sonic benefits (holographic space filling sound, more refined and extended / open treble, better separation and placement).
The MA9S1 modded monos trounced the ATM-2 (which has been my go to, beats all but constellation amps). They barely fit in the cabinet but they shall be staying and the ATM will likely go up for sale. The ATC-2 is staying. Air Tight I believe is one of the best at low signal transfer and amplification (phono cartridges and preamps, regular preamps). I think this says more about the Marantz monos (now competing with $20-40k amps) than it does about the air tight amp (a versatile champ in the 5-10k space).
Listening to DSD into Chord Hugo sent to Air Tight now and really enjoying Beck especially at low volume ... Very satisfying and spacious almost surround sound. The dogs are looking behind me for where the sounds are coming from just as I type this!!
Only issue is KEFLS50s. In this room (size and hard surfaces) at high volumes the upper registers can be a little hard (probably more the room than the speakers). Maybe a pair of Audio Note speakers are in order??

I am at my home in Bend this weekend and spent yesterday afternoon changing up my second system.
The initial system started with a perfect wave dac mkii with bridge feeding a CJ Pr350 amp and the KEF LS50 speakers. Then added a sugden headphone amp that did double duty as a preamp.
Then I sold the CJ and inserted the Air Tight ATC-2 preamp and ATM-2 amp. Yesterday I added the REL habitat wireless sub and I A/B'd the Air Tight amp and my Marantz MA9S1 mono blocks that I just got back from Jennifer Crock at Jena Labs. She did a full mod on them replacing many inferior parts and wiring most in the final signal stages, and she replaced all the jacks with top flight Cardas jacks as well as the iec, and she removed the attenuator function from the path. Tried them in my reference system and it was definitely an upgrade that was significant in sonic benefits (holographic space filling sound, more refined and extended / open treble, better separation and placement).
The MA9S1 modded monos trounced the ATM-2 (which has been my go to, beats all but constellation amps). They barely fit in the cabinet but they shall be staying and the ATM will likely go up for sale. The ATC-2 is staying. Air Tight I believe is one of the best at low signal transfer and amplification (phono cartridges and preamps, regular preamps). I think this says more about the Marantz monos (now competing with $20-40k amps) than it does about the air tight amp (a versatile champ in the 5-10k space).
Listening to DSD into Chord Hugo sent to Air Tight now and really enjoying Beck especially at low volume ... Very satisfying and spacious almost surround sound. The dogs are looking behind me for where the sounds are coming from just as I type this!!
Only issue is KEFLS50s. In this room (size and hard surfaces) at high volumes the upper registers can be a little hard (probably more the room than the speakers). Maybe a pair of Audio Note speakers are in order??
