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Crimson represents the pinnacle of tube dac performance. The unique 71A directly heated triode output stage with a full tube rectified power supply makes the digital audio experience warm and exciting. A separate power supply for high voltage and low voltage is connected with an umbilical cord to the main unit.

The Crimson uses parallel feed custom 220H inductor and tapped reactor to give the Crimson a low output impedance and dynamic presence.

The USB/DAC module allows for 32/384 PCM and DSD64/128 over DoP from an ES9038 dac chip.

$9000 for the base 71A model.
Silver output stage price on request.
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Cosecant, really the start of the USB dac craze. In August 6th, 2003 I finished my first Cosecant USB DAC. That was the start for all USB DACS to follow. The Cosecant uses a 6GM8/ECC86 tube with parallel feed transformer coupled output. The new output transformers are wound with Cardas high grade copper.

A separate linear power supply is included with the Cosecant.

The N2 version has isolated USB with a new USB controller with 20x the buffer space and a new reclocker circuit powered by two low jitter clocks. Hybrid 44.1, 48, 88.2 and 96KHz sample rates are supported. All operating systems are supported without drivers. Phones, Tablets and Computers are all supported as well.

$3500.00
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With only a few Cosecant transformer sets left. I figured I better get on it to design something to replace what started it all. After two years and countless new transformers and prototypes the Secant is born. Using directly heated triode output tubes, black gates and the same stellar N2 NOS DAC design this makes an excellent replacement. The external power supply even has a tube rectifier for the high voltage. Top LED indicators to show the sample rate and all bound up in the same package as the Cosecant was.

Hybrid 44.1, 48, 88.2 and 96KHz sample rates are supported. All operating systems are supported without drivers. Phones, Tablets and Computers are all supported as well.

$5000.00
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Callisto Silver USB DAC. Continuing in the N2 tradition the Callisto uses an isolated USB section with a new controller with 20x the buffering space. A reclocker powered by two low jitter audio oscillators and an NOS DAC. Shinko Tantulum resistors do the IV job directly connected to the VT135 triode output tubes into silver outputs. V-Cap ODAM coupling capacitors and an external linear supply supply the rest.

$10,000
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The Brick was conceived after the Cosecant to bring more customers into this new Computer Audio technology. The Brick uses a single 12AU7A in a unique reactor follower directly coupled to the TDA1543 dac chip with passive I/V. The new N2 version is a hybrid which allows users to use 24/96 material in an NOS environment. The USB is fully isolated from the main circuitry. Hybrid 44.1, 48, 88.2 and 96KHz sample rates are supported. All operating systems are supported without drivers. Phones, Tablets and Computers are all supported as well.

Brick N2 $2000, one left with silver wound inductors $7500
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Ethernet Spacelator: I did 3 versions of the prototype and finalized this version of the ES. So what is the Ethernet Spacelator? It’s a dual reclocker with a dual built in power supply and dual isolation, it’s a Ethernet repeater. Unlike everyone else putting a nice power supply on a standard hub chip. Instead I looked at the problem and this is what came out of it. The input is your down stream port towards your router and the output is the upstream port that should be connected to the Network DAC or Streamer. The Ethernet signal is re-clocked two times before it reaches the Network DAC or Streamer. Put all your computers, NAS, routers and other noise makers on one side and polish up that signal before it reaches the import stuff.
I have some pre-production models available at $750 each.
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