Harp Delay
Harp Delay
Harp Delay

Harp Delay

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The pedal that established Lone Wolf Blues Co, sure there are cheaper delays but there are none that are better. The Harp Delay is the first and still the only delay pedal designed for harp players, try it and you too will be a believer.

To my knowledge this is the first delay designed for harp offered to the public. It is not a tone-sucking modded guitar delay, but a tone-enhancing harp delay. The dry portion of the signal passes through a buffered input and high-value coupling capacitors, assuring maximum bass response. The echo portion passes through 5 low-pass filters to provide maximum warmth. This is a digital delay that has all of the warmth of an analog delay and then some.

The circuit is centered around a chip that has a low noise rating at < -90dBV, low distortion, < 0.5% THD, 44k digital processing, and is capable of up to 300ms delay. The input is FET buffered for high impedance to provide proper loading for your favorite crystal or CM mic. The gain has been reduced to prevent solid state distortion and is balanced to have an overall gain of 1x so that the level is the same when bypassed. The warmth comes from the superior bass response, distortion-free performance, and the filtering, which provides the effect of a distancing echo by reducing the highs more on every repeat. This delay has an even better roll-off in high frequencies than the Boss analog delay. The delay operates off of a 9 volt battery or a 9V DC power supply, and it has reverse polarity protection. The battery is switched OFF when an external power supply is used. The LED is ON when the delay is in, and is OFF when the delay is in bypass. The mic "IN" jack acts as the ON/OFF switch, and the bypass is a true bypass. The Harp Delay is guaranteed to please even the most diehard analog delay fan.

The settings are very basic. For a reverb type effect, set the DELAY at 10:00, REPEATS at 3:00, and BLEND from 10:00 to 4:00. To acheive a slap-back, set the DELAY from 9:00 to 5:00, REPEATS at 7:00, and BLEND from 10:00 to 4:00. To achieve an echo effect, set the DELAY from 8:00 to 5:00, REPEATS from 9:00 to 5:00, and BLEND from 10:00 to 4:00. This will get you started, but ultimately whatever setting you like is the right setting.

The pedal requires a 9v battery or a 9vdc power adapter. The AC adapter requirements are 9vdc with a minimum 100mA output and a 2.1mm x 5.5mm connector with a negative center and positive outside. The battery is switched OFF when an external power supply is used, and the IN jack acts as the ON/OFF switch and the pedal is ON as long as there is a cable plugged into the IN jack. Power adapter is not included.

Because delay pedals are hard on batteries, with an estimated 10 to 12 hours of playing time, it is recommended to purchase the 9V power adapter.


  1. DELAY control
  2. REPEATS control
  3. BLEND control
  4. Superior bass response
  5. Analog warmth
  6. 9V DC input (barrel with a negative center)
  7. True bypass with LED indicator
  8. High impedance input
  9. Reverse polarity protection
  10. 10 year warranty on parts and labor
  11. If not satisfied, return within 60 days for a refund
Customer Reviews
5.0 Based on 16 Reviews
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carl b.
United States United States

Harp Delay

This is my first pedal board/chain build and after my research, with confidence, I went all Lone Wolf Blues Company. The Harp Delay itself came well packed in a simple box, but with good instructions on what the knobs do. The delay does exactly as described with no noise. It's fun learning the pedal board and chain order, but youtube and LWBC makes it super easy. Another great thing is the shipping speed. I didn't buy all my pedals at once, but when I decided to add a pedal I got online with Lone Wolf Blues Company and BOOM!, it was at my doorstep faster than amazon!! Thanks LWBC!!!

Ulrich R.
United States United States

Easily used to create depth and space in my signal. I was able to achieve slap back effect and reverb using the instructions that came with the pedal. Quality of pedal is excellent and all my questions were answered by Lone Wolf Blues Co.

Philip H.
United States United States

Get it!

Nice sound

Michael S.
United States United States

Harp Delay Effects Pedal

This Harp pedal is a dandy! The fullness of sound is amazing. It is well worth it's price.

Sam B.
United States United States


Overall, this delay pedal doesn’t do what I wanted, which was to give me various reverb sounds. Reverb pedals don’t work very well for harmonicas it delays do a much better job. I have a Digitec delay pedal that works much better at this. I thought your pedal would give me better control and perhaps a smoother reverb/echo but so far my experimentation hasn’t been fruitful. So I’m pretty disappointed.

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