Boss DM-2 Delay 1982 s/n 206800 with MN3205 BBD and MN3102 Clockdriver Japan

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BEP Boutique Effect Pedals
Rotterdam, Netherlands
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About This Listing

Boss DM-2 Delay in a beautiful natural relic condition. It's in perfect working order and it's probably the best calibrated delay that I've ever heard. This DM-2 has a very good controllable self oscillating capability. 9 ( see video of this DM-2 where this delay is demonstrated )

This analog delay pedal is able to produce delay times ranging from 30 to 330 Milliseconds. It's got three dials with adjustments for Repeat Rate, Intensity, and Echo. This effect draws a lot of current so not all power supplies are able to power up this pedal. The vintage analog DM-2 is a very popular effect and prices are usually very high for a beat up but working pedal.

Version differences
There are at least 3 different versions of the DM-2. The first version was using the MN3005 BBD. This was soon changed to the low current version of the same circuit called MN3205. It is worth noting that the MN3005 has a SN ratio of 75 dB while the MN3205 is a little more noisy with its 67dB. The MN3205 only produces 0.8% distortion compared to 1% for the MN3005.
The DM-2 can be approximately dated by reading the number on the compander IC NE570N. It should have a 4 digit number giving you the year and month of production in the form YYMM. Note that this is the production date of the integrated chip and not of the pedal but it's unlikely that the chips were stored for very long before used.
Marking of PCB: ET-5214-510
BBD: MN3005
Clock Driver: MN3101

Marking of PCB: ET-5214-510A
BBD MN3205
Clock Driver: MN3102

Marking of PCB: ET-5214-510B
BBD: MN3205
Clock Driver: MN3102
Controls: Repeat Rate, Echo, Intensity
Connectors: Input, Output, AC Adaptor
Current Draw: 11 mA (DC 9V)
Weight: 450g.
Input Impedance: 470kOhm
Output Impedance: Over 10kOhm
Residual Noise Level: -100dBm (IHF-A)
Delay Time: 20ms-300ms
Recommended AC Adaptor: ACA Series
Black - Made In Japan
Green - Made In Japan
The DM-2 was sold from June 1981 to February 1984.

Product Specs

Listeda month ago
ConditionFair (Used)
Fair condition gear should function but will show noticeable cosmetic damage or other issues.learn more
Made In
  • Japan

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