Thrax ORPHEUS cost no object "as new" Phono Preamplifier in Black with LCR RIAA Equalizer :
Also available and listed separately on Audiogon the matching Thrax Dionysos pre regularly $19,500 for $10,500 and the Teres mono blocks regularly $30,000 for $15,995.
Multi input micro processor controlled phono stage based on tube gain stages and LCR correction.
Built-in step up transformer
Programmable gain and loading
Accepts both balanced and unbalanced input signals on RCA and XLR connectors
Switches ground plane with input selection preventing ground loops
Balanced and unbalanced output
Programmable ground arrangement for large systems
Programmable absolute phase per input
Choke input rectifier for lowest switching noise
Shunt regulated constant current PSU for lowest noise and best dynamic behaviour
Interlocking solid aluminium chassis
uses two tube gain stages with zero feedback and a passive LCR
equalizer with 2
inputs on RCA and one on XLR connectors. All inputs are balanced
differential unless the grounding option is engaged on the RCA inputs.
As we switch the ground plane
when switching inputs there are no hum loops or induced ground
The input stage is a super low noise D3a German Post tube used as a
triode. Loaded by a constant current cascode it provides the necessary
gain and output impedance to feed the custom passive LCR RIAA correction
The switchable input transformer interfaces to MC cartridges and has selectable gain and loading impedance.
The equalization is passive and the next stage is another super
low noise tube loaded by a transformer to bring the signal up to the
necessary level and provide complete isolation of this sensitive circuit
from the following components.
The filter is out of any gain loops and sits between the two gain stages protected from any unpredictable influences.
The equalization is realized through the use of constant impedance
LCR filters using coils wound with OFC wire and silver capacitors.
This way the input stage sees a constant load, making its behavior predictable at any signal level.
power supply of Orpheus uses a choke input full wave tube rectifier
arrangement. This eliminates switching noise and any other disturbance
that comes before the choke. The other benefit of this topology is that
the choke keeps the voltage on the capacitor bank constant.
All this is governed by a microprocessor switching the appropriate
combination of relays and monitoring the status and incoming command.
The chassis is milled in house from solid plates of different
thickness aluminium that are interlocked together to form a ring like
We have the power supply mounted on the left sidewall of this structure
and the signal transformers on the right side. Two semi-flexible bars
on which the motherboard and its heat sink are attached, which then
support this ring.T
he top and bottom plates link all sides of the ring with the
flexible bars and the feet made from carbon doped plastic on flexible
There are no screws visible anywhere on the chassis. And the chassis feels like a solid block.
2 x RCA, 1 x XLR - MM or MC phone cartridges
RCA or XLR
115 or 230V
432W x 400D x 120H mm
2 x D3a amplification
2 x 6C4П (6S4P) amplification
is best to call David and visit: www.weinhartdesign.com with questionsin Los Angeles Showroom 310-472-8880 or on my cell after hours and
weekends 310-927-2260 any time from 10AM - 10PM.
Design has lots of other items new and used and if you're in Los
Angeles or visiting please accept my invitation to experience our World
Class Audio Showroom and please visit our web site @ www.weinhartdesign.com
are always interested in purchasing quality Audio and Video items, LP collections and most quality trades are welcomed.
All sales out of California are State Sales Tax exempt.
California State Sales Tax of 9.5% applies for items picked up or shipped to a California address.
accept payments by Bank Wire Transfers without fees and is the only
form of payment on all sales out of the U.S. and Canada. We prefer this
method of payment and also makes shipping to addresses other than
VISA, MC and Papal are gladly accepted within
Changing the Way You Listen,
the U.S. and Canada as long as the charge is approved and shipping to
the billing address on record and adds 3% to cover costs.
call me directly in my world class showroom in Los Angeles weekdays @
310-472-8880 or any reasonable time on my cell including weekends @
310-927-2260 and I can answer your questions and help you with all of
your new and pre owned needs.
Weinhart Design, Inc.
President & CEO [email protected]
The Audio and Video Expert
2337 Roscomare Road, Studio #1
Los Angeles, California 90077