| Our CD12V tube digital processor uses the same
Ultra-Linear circuit topology as our
reference Daniel II preamplifier to deliver the most realistic reproduction of CD's and
DAT's. It has the ability to draw the listener into the performance. Customers continue to call us to report that in head to head
comparison with other processors the CD12V provides unprecedented levels
of clarity, dynamics, and just plain "you are there" realism.
Everybody is thrilled with it holographic imaging - I think it is its
greatest technical merit. The CD12V processes all analog signals on
its own printed circuit module while digital signal processing is
confined to a separate printed circuit module - this insures the
complete preservation of the audio signal. Each of these modules
contain localized regulation to both isolate each section from the
other and insure the lowest possible power supply impedance. In the
Digital Module our proprietary PLL circuit interfaces with the Digital
filter to reduce jitter to levels below audibility. The perfectly timed
digital signals are then passed to the Analog Module where conversion to
analog is immediate via the well respected Philips TDA1541
DAC. Three high speed low "Z" servo regulators and audiophile quality polypropylene capacitors support the DAC.
(When operated in this manner, the TDA1541 attains unparalleled audible performance).
DAC output is connected directly to the cathode of our proprietary
Current to Voltage converter - a configuration that we have selected
above others to deliver the most dynamic and image perfect transition
from the TDA1541. Finally we deploy an "anode follower" in unity gain
configuration for filter and buffer duty. Both sections are supported by
our proprietary high speed, wide bandwidth, low impedance servo
regulators located within 1" of the audio circuitry. Filaments are also
regulated to eliminate all noise and hum and extend
tube life.
One note regarding the Philips Chip Set: We have steadfastly remained
with the TDA1541 DAC over the years despite "industry gurus" that embraced
the "DAC of the day". In our tests, they all sounded hard or dimensionally flat by
comparison. We are humored today by the reemergence in popularity of the
TDA1541 as the most musical DAC available - we knew it all along.
The CD12V is available in blank board set, full kit (blank board set with
all components) or fully assembled and tested board set. For those purchasing the blank board set, we have
available the CD12V Semi-Pac that contains all of the semiconductors
specified for the project. Standard and premium (high grade regulator
op-amps) Semi-Pacs are available. ORDERING INFORMATION Blank
PC Board Set : P/N PWB-CD12V = $225
Board Set Kit (Board & Components): P/N KIT-CD12V = $1250
Assembled /Tested PC Board Set : P/N ASM-CD12V = $1600 Semi-Pac
Standard : P/N SEMI-CD12V = $500 Semi-Pac Premium : P/N
PSEMI-CD12V = $575 Main Enclosure (Generic) - P/N ENC-CD12V = $200 |
