ThraxOrpheus Reference PhonousedThrax Orpheus Reference Phono((( SALE PENDING )))Thrax ORPHEUS cost no object "as new" Phono Preamplifier in Black with LCR RIAA Equalizer “Highly Recommended” : Known as One of the worlds finest Phono sections. Just lower...7349.00

Thrax Orpheus Reference Phono

Listing ID: lis9ja46 Classified 
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Time Left:2 Days
New Retail Price: $19,500.00


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Ships fromLos Angeles, CA, 90077
Ships toUnited States and Canada
Package dimensionsunspecified
Shipping carrierUPS
Shipping costSpecified after purchase
Original accessoriesBox, Manual
Agon miniAverageResearch Pricing


Thrax ORPHEUS cost no object "as new" Phono Preamplifier in Black with LCR RIAA Equalizer “Highly Recommended” :

Known as One of the worlds finest Phono sections.

Just lowered to make this an even more outstanding deal ‼️

Looking for the RIGHT BUYER and lowered for a fast and friendly sale.

Multi input micro processor controlled phono stage based on tube gain stages and LCR correction. 

Features :

  • 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

  • Modular construction

  • Microprocessor controlled

  • Interlocking solid aluminium chassis

  • Orpheus
    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
    following it.

    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.   
    The 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. 
     Technical Specifications:          Inputs

    2 x RCA, 1 x XLR - MM or MC 
    phone cartridges


    RCA or XLR 
     Power supply
    115 or 230V 
     Power consumption

    15 Kg 
    432W x 400D x 120H mm 
     Tube compliment
    2 x D3a amplification 2 x 6C4П (6S4P) amplification

    is best to call David and visit: 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 @

    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 billing agreeable.

    VISA, MC and Papal are gladly accepted within
    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.

    Changing the Way You Listen, 
             David Weinhart
           Weinhart Design, Inc.
             President & CEO

     [email protected]

    The Audio and Video Expert
    2337 Roscomare Road, Studio #1
    Los Angeles, California 90077
    Showroom) 310-472-8880
            Cell) 310-927-2260

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