FS:Prometheus NOS USB DAC (FINAL $ DROP! Syd,Aus|W-wide) w FREE AIMAGIN USB ISOLATOR):XLR outs&transf upg
Will Ship To: Anywhere
FS is my 6 month old Prometheus N.O.S. No longer need it since just got a NFB-10WM
The DAC has the the Nanocrystalline Double C-core OPT Upgrade. I've asked Nicholas to fit it with Line and XLR outs and a USB/Coax ins.
Please see the DAC home page for the features list. http://www.promitheusaudio.com/dac.html
'Our Non-oversampling DAC using the TDA1545A chip with Asynchronous Relocking, Passive I/V stage. Output transformer coupled'
Nice smooth NOS DAC with a natural but still detailed sound.
On the analog out section it currently has 2xLME49710 installed, but you can swap them for whatever you want to suit your sound customization prefs.
Condition: Mint, slight wood finish manufacturing defects on the front only visible in bright, direct light (see pics).
NOS Dac note: Please note, the noise floor of NOS DACs is higher than for modern ones. I have no problem when I listen to modern music (and I listen at extremely high volumes), but for some non-volume leveled classical with low signal (e.g. really old dvds they for some reason haven't at least bumped a bit) especially if you listen at very loud volumes like me, you MAY notice it on the quieter bits (not a big deal since those recordings will have their own fair share of noise anyway).
I got it for $660, it's yours for $660 300 + shipping ($30 within Australia, international shipping as per: http://auspost.com.au/apps/international-parcel.html (6 kg))+ 2% split paypal fees (bank deposit available for Aus buyers)
Our own silver pulse transformer (this separates the ground thus resulting in a quieter music) to couple the digital output of your cdp into our DAC. Our nickel core transformer is wound on a 2mils lamination (0.05mm).
Therefore the digital ground is broken up between the DAC and the Transport/CDP to allow a cleaner presentation as the grounds are isolated
Dedicated pre and post regulator (for each chip) to bring down the noise floor
Specially wound Balanced power transformer to power DAC, this is the same winding topology as our balanced power supply.
This further brings down the noise floor. The power transformer is wound on a M6 core
Dedicated windings on the power transformer for the digital power supply and the analog power supply. This is NOT shared to prevent the transfer of digital noise to your precious analog power supply.
The power transformer is fitted with MULTIPLE electrostatic shields to prevent the spreading of the noise cause by digital circuits. This electrostatic shields shunt noise to ground thus keeping the power supply clean
Asynchrous reclocking to 100Mhz. Clock module is place below the PCB to prevent spraying the board with noise. The clock module is located at the bottom left end of the PCB. The clock has its own dedicate power supply to decouple the noise generated from the clock
The DAC is design around a good power supply system
IN the digital segment there is a master regulator and then its is fed into local regulators individually finding the IC. SO each digital IC is totally isolated from another digital IC
The Opamp segment is run again with its own local discrete regulator. This keeps the noise isolated between left and right op-amps
Selectable gain structure of 1.25volts out, 2.2volts out and 4 volts output. This allows user to optimize their gain structure. This can be change by the user by opening the unit and selecting the right jumper on the board
On the output, output transformers is used to couple the analog voltage from the DAC to the outside world. This way the DAC is impedance match to your down line equipment. This output transformer is wound on a M6 core
Chassis for the DAC is built on our tune wooden Merbau wood with Stainless Steel plate similar to our TVC construction
Our new Neotech 7N copper for internal wiring Teflon wires for power
Pure Silver RCA used for digital input and analog output
USB input and Coaxial Input
Edited by svyr - 1/21/12 at 5:35pm