The Audible Illusions M3 preamplifier is in excellent condition. This preamp sounds fabulous with a deep, wide natural soundstage. PLEASE NOTE THIS IS NOT A 3A or 3B, it is the M3 version. I have owned both the 3 and 3A models at the same time and heard no audible difference.
Only cosmetic flaw is the On/Off silk screeening has worn off- otherwise it works and looks great and has the better quality Audible Illusions tubes all around.
This one has the continuous dual volume controls, there are no issues at all. You will be very happy with it.
I am offering a 30 day money back guarantee on this (less shipping).
Buyer to pay 3% paypal fee and for insured shipping charges.[/size]Here are the specs for it- thanks for looking.[/size]Features:
Circuit Design is Dual Mono, Class-A, Single-Ended Triode, open-loop.
External Power Supply.
Main Chassis has five-separate, fully-regulated FET power supplies in addition to separate filament supplies.
Audio Circuit has no Cathode Followers or Buffers.
Standby Soft-Start Circuit prolongs tube life and circuit components.
Separate Volume Controls are Precision Attenuators.
Proprietary gold-plated RCA jacks with Teflon insulators.
All circuit boards are hand-soldered with silver-bearing solder.
All polypropylene and polystyrene capacitors are proprietary designs of Audible Illusions.
M3 TECHNICAL SPECIFICATIONS
GENERAL
Overall Gain: 58dB at 1kHz
Tube Compliment: 4-6922 twin-triodes, graded & matched
Weight: 20.5 lbs, 24 lbs (shipping weight)
Dimensions: 19"W x 3.5"H standard rack
Chassis is 17"W x 11"D x 3"H
Power Supply, 6"W x 10"D x 5"H
Muting: 45 second warm-up and automatic brown-out protection
Power Requirements: 115-125VAC, 60Hz
45 watt maximum. 6 foot IEC Line Cord, supplied
Optional 100, 220, 230, 240 50-60Hz transformers.
PHONO SECTION
Gain: 28dB at 1kHz
Frequency Response: +/- .25dB of RIAA from 20hz to 20kHz
Signal Phase: Non-Inverting
Signal to Noise: 74dB below a 5mV input wideband
Distortion: Less than .015% at 20 kHz
Input Impedance: 47 kOhms
Phono Overload: 1.2v rms at 1 kHz (100k load)
750mv rms at 1 kHz (IHF load)
HIGH LEVEL SECTION
Gain: 30dB, Tape & S/S Processor 0dB
Frequency Response: Within +/-1 dB
2Hz to 100kHz measured w 1-1 probe
(50 kOhms, 100pf load)
Signal to Noise: 90dB below 1.5V rms output wideband
Input Impedance: 50kOhm - all
Output Impedance: Main-1.2 kOhms, Tape-150 Ohms
Distortion: .10% at 1.5V rms, 20-50 kHz, into 50kOhm load. Less than .12% THD at 1v out into IHF load
Signal Phase: Main Outputs - Inverting
Tape Outputs - Non-Inverting
Maximum Input: 9v rms.
