Boss BP-1W Booster/Preamp

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Effect Pedal for Electric Guitar

Waza Craft Series
Clean boost and preamp
Controls: Level, Gain
Switches: NAT (Clean Booster)/CE (Chorus Ensemble)/ RE (Space Echo)
LED: Effect On
Footswitch: On/Off
Input: 6.3 mm jack
Output: 6.3 mm jack
Power supply connection: Barrel connector 5.5 x 2.1 mm, centre negative
Power supply with a 9 V battery or 9 V DC power supply (coaxial connection - centre negative - not included, Art. no. 409939)
Dimensions (W x D x H): 129 x 73 x 59 mm
Weight: 450 g
Made in Japan

30-Day Money-Back Guarantee

3-Year Thomann Warranty

Available since November 2023
Item number 577601
Sales Unit 1 piece(s)
Effect Types Booster

£148

All prices incl. VAT

Sales Rank

in Miscellaneous Guitar Effects

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Tone King Imperial Tri-Tube Preamp

29 Customer ratings

5 25 Customers 4 4 Customers 3 0 Customers 2 0 Customers 1 0 Customers

4.9 / 5

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21 Reviews

Awesome boost pedal

Imranm 21.12.2023

Check out some of the reviews on YouTube. Usually these reviews are a little generous with praise. Unsurprisingly, but seriously this time they’re spot on. This pedal really should be called the magic dust pedal. It just adds something to the tone. It’s so special!

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Dont expect linear freqency boost.

Golimonkey 16.10.2024

This is not "natural voice with minimal coloration". I bought this pedal thinking it will linearly boost the signal like GE-7 or TC Rush. Wanted something with better switch than TC and better knobs than GE-7. But this pedal, even it its NAT mode cuts the low frequencies (I tested it with REW Software, not just by ear). Altough its not so noticable by ear I feel like BOSS should tell people in their marketing what are they buying. This is not "natural voice with minimal coloration" they clearly have high pass filter in signal path when pedal is engaged.

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Very creative pedal, two know wonder

Docfrizzy 10.12.2025

So I was a bit confused by the pedal when I bought it but I kept using it. It can be a clean boost on the middle setting, and that is always useful.

Besides that though the two preamps are, well basically little solid state preamps. These have been used on records and live by famous people. That doesn't help you though unless you know how.
Basically - the RE and CE circuits have a certain EQ to them that can really work well with some amp/pickup combinations. Also the Clipping that happens at higher gain is very touch sensitive and stacks well with other pedals and adds light compression. So in a way this pedal is highly usable in any chain and dead simple to use with the two knobs. A Tone control imo was not necessary (you probably have tone controls on your guitar and like 5 other pedals, or 15 ;)).

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Awesome boost pedal, Waza Craft treatment!

Stratlife 25.03.2024

Fantastic boost pedal that brings legendaries preamps in an analog circuit. Not to forget the buffer that includes Standard / Vintage variations. Recommend it for every John Frusciante fans out there!

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Boss BP-1W Booster/Preamp

Effect Pedal for Electric Guitar

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29 Customer ratings

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21 Reviews

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Boss BP-1W Booster/Preamp

Effect Pedal for Electric Guitar

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