Product images are provided for reference and may not represent the exact model, configuration, or included components.

At A Glance

Input Impedance
730 kΩ
Output Impedance
55 kΩ
Max Input Level
-5 dBV
Max Output Level
+5.5 dBV
Noise Floor
-95 dBV
Max Gain
+11 dBV
Bypass
True Hardwire
Current Draw
12 mA
Power Supply
9 volts DC
Description

Dunlop produced the EP101-U Echoplex PreAmp as a dedicated pedal recreation of the preamp stage found in the Maestro EP-3 Echoplex tape echo unit. The pedal was positioned as a utility device for players seeking to replicate the buffering and gain character that the EP-3's preamp section contributed to a signal chain, independent of any delay or echo effect.

The circuit follows the EP-3's signal path using FET circuitry and includes a Gain control capable of up to +11 dB of boost. Measured performance figures are: input impedance 730 kΩ, output impedance 55 kΩ, maximum input level −5 dBV, maximum output level +5.5 dBV, noise floor −95 dBV, and maximum gain +11 dBV. Switching is true hardwire bypass. The unit draws 12 mA and operates on a 9-volt DC supply.

Owners requiring maintenance, calibration, or power-supply troubleshooting on this unit should consult a qualified electronics technician familiar with effects pedal circuitry.

Q&A
Have Questions?
The owner archive

From the people who own them

Nothing in The Vault is for sale. These records exist so the instruments stay documented after the manufacturer moves on — and the most useful part of that record is what owners add to it.

Owner photos

Owner photos

Put yours on the record.

The catalog shot showed one finish, under one light, a long time ago. Yours has been played. Photos from owners are what the next person finds when they are trying to identify a part, match a finish, or work out whether the one they just bought is really what the seller said it was.

Comments

What do you know about this one?

Specs only go so far. What actually fits, what breaks first, what the factory got right and what everyone ends up changing — that lives with the people who own them, not in a datasheet. Post what you know and it stays on this page for whoever comes looking next.

RELATED PRODUCTS

Gear Help, Handled

From spec questions to full builds — players who have lived this gear since 2007.

Since 2007

Fit & Compatibility

  • Bridge, tuner, and nut fit confirmed for your guitar
  • Pickup and electronics compatibility checks
  • Pedal power and amp/cab impedance matching
Ask Before You Buy

Mods & Upgrades

  • Upgrade paths for the guitars you already own
  • Wiring, routing, and hardware swap guidance
  • Advice from people who actually do the mods
Talk Mods

The Vault

  • Discontinued and EOL guitars kept on record
  • Specs, history, and known part compatibility
  • Share your builds and mods with the community
Enter The Vault