Audible Illusions Modulus 3B Preamplifier
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.
Condition: Used$2,100
| 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) |
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