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The Windmiller Preamp
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The Windmiller Preamp

A Preamp Booster based on the Grampian Reverberation Unit

AP0030

In stock

$198.45

✅ 🇺🇸 Prices for the US already include tariffs, we send using DDP (delivery duty paid) conditions. Sales tax will be applied according to the state’s legislation over the matter.

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The Windmiller pedal is an amazing tool to get a vintage gritty tone, both clean and overdriven, due to its unique circuit. Use this versatile preamp to boost the guitar signal and push your amp or overdrive pedals to the limit, or just with a light touch of gain to add a bit of salt and pepper to your tone. Attain the distinctive tone that has not lost relevance over the years and no one else has tried to recreate! Learn Pete Townshend’s trick to get his legendary raw and powerful crunch.

THE WINDMILLER PREAMP MAIN FEATURES

• Faithful recreation of our own Grampian Reverberation Type Unit 636 S/N: 1138

• Heavily improved signal to noise ratio and increased treble response

• Hi. Cut and Lo. Cut tone shaping controls

• Preamp or clean booster? It’s up to you!

• Overload indicator lamp

• Smart Track® Fastening System

 

DOWNLOAD WINDMILLER'S USER MANUAL

 

AUDIO SAMPLES

  
 

KNOW MORE ABOUT THE WINDMILLER PREAMP

FEATURES

Weight
450 gr. (1 lbs)
Dimensions
13,6 x 8,7 x 5,5cm (5,4” x 3,4” x 2,2”) with knobs
Included
1 x Anti-sliding rubber pad & 1 x Velcro® pad
Effect
Preamp - Booster
Power
9V DC Center Negative 100mA minimum
Current Draw
≈38 mA
Bypass
Relay True Bypass

What customers think about this product?

9
Write a review
(5/5) 

A Quick Review While He’s Away…

Absolutely amazing pedal. I slept on it for a while. “Does it really do anything? Do I really need it?” Yada yada yada. Decided to give it go since I love all the Beatles-inspired ones and man, this pedal is worth it. It adds magic to your tone. Gives you that little extra to push you over. I’ve got it on a Who-inspired board and I’m trying to avoid the temptation of getting another and another for my other boards. I love this pedal. Aclam will not disappoint.

- 20 Aug. 2025
(5/5) 

Windmills?? Yeah!!!

Finally had a chance to test the windmiller out in a live band context.
I placed it first in my chain using it to push a Marshall JMP.
P90’s sizzled. Filtertrons nailed Who tones for me. Humbuckers were more saturated. Every tone the other band members were amazed.
This has become my always on pedal. Simply superb.

- 29 June 2025
(5/5) 

Townshend tone

Great packaging, speedy delivery, great and powerful sound. All around very happy with everything about the pedal and transaction. Would recommend to anyone. Likely will buy more pedals. Like their guitars too. But, a bit out of my budget.

- 28 June 2025
(5/5) 
The customer has rated the product but has not posted a review, or the review is pending moderation
- 23 Jan. 2025
(5/5) 

Excellence

You´ll get that Townsend grit instantly...
Buuut there is much more in this pedal.
Its build Quality, Arts, Details and information are great,
YOu get 2 pedals in one: please read de instructions about impedance.

- 16 Jan. 2023
(5/5) 

The second best pedal I have.

The best pedal I have is the Dr. Roberts. This is almost as good. Both are absolutely fantastic and do exactly what they promise. I saw one comment that said it was not good at bedroom level but I had no problem at bedroom level through my Princeton reverb
I was playing Pete Townsend who songs immediately. Bravo toaclam

- 18 May 2021
(5/5) 

- 14 May 2021
(5/5) 

Jonesz

Listen, this pedal gives you the growl to devour all these phony baloney guitarist. I cant tell you how much i love this thing. Buy it, you wont regret it

- 30 Apr. 2021
(4/5) 

clipping?

i was excited to receive my windmill Preamp! so i plugged it into my pedal board directly after my guitar as the fist pedal followed by a compressor and then my various pedals. i'm experiencing some clipping when the pedal is in the 'off' setting. is this happening to anyone else?

- 28 Apr. 2021

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Product specifications may change on occasion, our policy is to continually improve our products. Aclam Guitars reserves the right to change any price or specification without prior notice.

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