Audible Illusions Modulus 3B Preamplifier
Audible Illusions In Stock

Audible Illusions Modulus 3B Preamplifier

SKU / Model: N/A
★★★☆☆
28 customer reviews
Reference Price / Est.
$2,100 USD
✓ Ready to Ship
Contact Us

Quick Overview

Up for sale Audible Illusions Modulus 3B Preamplifier. Used but is fully operational and functions as intended. Come with manual, original box and AC adapter with power cable.

Product Description
Brand Audible Illusions
Model Modulus 3B
Type Preamplifier
Condition Used, Excellent condition

Package includes:

  • Audible Illusions Modulus 3B Preamplifier
  • AC adapter
  • Power cable
  • Manual
  • Original box
  • 15 days money back guarantee

Control Functions: Dual-Mono Left & Right Stepped Attenuator Volume Controls, Subsonic Filter, Tape-Source, Stereo-Mono, Muting, On-Off.
Input Selection: CD, DVD, Phono, Tuner, Video, Auxiliary, Tape
Output Selection: Main (2) Tape
Optional: Internal, gold-plated L&R channel circuit boards for low-output M/C cartridges. Rack Mt.Faceplates available as a special order.

Features:

  • Circuit Design is Dual-Mono, Class A, Single-Ended Triode, Open Loop.
  • External Power Supply, housing three separate supplies, prevents unwanted AC induced distortions.
  • 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.
  • Automatic-Timed Muting.
  • Control Knobs have Low-Light Backlit Illumination.
  • Separate Volume Controls are Precision Stepped Attenuators.
  • Proprietary gold-plated RCA Jacks with Teflon Insulators.
  • All circuit boards are Hand-Soldered with silver-bearing solder.
  • All Polypropylene, Teflon, and Polystyrene capacitors are Proprietary Designs.

Modulus 3B Specifications

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.
GENERAL
Overall Gain 58dB at 1kHz
Tube Compliment 4-6922 or 6H23EB twin-triodes, graded & matched
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.
Dimensions (W x H) 19” x 3.5” standard rack
Weight 20.5 lbs, 24 lbs (shipping weight)