After selling a lot of these 2-box and the ultimate 4-box Quattro's its very clear they deserve their title, "Best pre-amp ever made with phono" by a reviewer. These are magnificent pre-amps loaded with proprietary tech. Due to its outstanding performance it well deserves our Best in Class Award. -- TA
The Audion next to top-of-the-line, line level with moving coil phono stage 2 box mono-block pre-amplifier is totally hard wired point to point and hand built using solid 5 * 9’s silver wire in all its audio path and specially selected and matched components including some tanatalum resistors, etc to make it one of the best sounding preamps in the world! Featuring Audion's special unity gain, zero gain stage technology. Audion Premier Quattro line level preamplifier is available in our Uni-chassis’, and includes an MC stage for even the most sensitive of cartridges, it is a true high-end, high quality product capable of handling a massive array of sources.
There are 4 line level inputs and an MC input. The Audion Quattro preamplifier is the finest stock preamplifier ever made according to reviewers. It has the benefits of both simplicity of design and superb execution.
(with only 4 tubes in the entire signal path from the cartridge, a 4 chassis totally dual-mono construction and the power supplies use only polypropylene capacitors). There are 17 active power supply stages in the 2 box and 21 active supplies in the 4 box.
We would recommend only two upgrades to this pre-amp, and upon Arthur Salvatore’s recommendation we would advise customers purchasing this to include Teflon V-caps and either Vishay Dale stepped attenuators or Goldpoint.
As with all our pre-amps they feature a transformer less design direct cathode coupled with no input, inter stage or output wound components making this preamps extremely fast and capable of handling the most intricate and detailed passages of music that can be shown them. Outstanding performance, lightning quick response curves and terrific transparency.
The 2 box and the 4 box Audion Quattro pre-amp uses NOS Russian 6H23N tubes as standard, it also has a ground lift switch at the rear to assist in resolving grounding issues by floating the ground internally above mains ground.
Warranty: 2 years. Tubes 6 months.
Sensitivity Ref – 0dbV 0.4mVMC Phono
Gain: 69dB Phono
Phase - Correct
Distortion @ 1V Noise (CCIR) Frequency Response: 20 – 205KHz ±1 db RIAA
Signal to Noise: >70 db
Inputs: 1 MC Phono, 4 Line
Outputs: 2 Main Out, 1 x tape
Consumption: 12 Watts
Tubes: 4 x 6H23N or 4 x E88CC
Impedance: 47K / 100 Ohms
Size - 16.5 in deep, 9 in wide
and 6.3 in tall - Less tubes
Weight 13.22 lbs each pre 15.43 lbs PSU each Mono-block
Fuses - Power 1A / 120V
Reviews for Audion Premier Quattro Preamplifier
*The Audion Quattro is a full preamplifier, so it is not also included in this dedicated Phono Stage File. However, the Quattro, along with the Jadis JP-80 (highly modified), are still the two reference standards that we use to judge separate phono stages. While no dedicated phono stage has fully matched them yet in overall performance, the Aesthetix IO has come close enough to enter Class A" -- Reference components
"The Audio Quattro is the finest stock preamplifier ever made to our knowledge. Its phono stage can accommodate only low output moving coils, and its line-stage is just a cathode follower without any gain. It has the benefits of both simplicity of design and superb execution (with only 4 tubes in the entire signal path, a 4 chassis totally dual-mono construction and the power supplies use only polypropylene capacitors)." read entire review