“A quality tone conditioner to have in front of your amp”: Boss BP-1W Booster/Preamp review

The BP-1W presents classic Boss preamp circuits in a compact pedal format – and it might just be the secret tone weapon your rig has been waiting for

Boss Waza Craft BP-1W
(Image: © Future / Phil Barker)

Guitar World Verdict

The BP-1W is a quality tone conditioner to have in front of your amp. Couple it with the recently released IR-2 Amp & Cabinet to add switchable gain-changing options and you’ve got a truly portable rig that’ll get you through many scenarios.


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    Revives classic Boss preamp sounds.

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    Compact size.

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    Battery power for portability.


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You can trust Guitar World Our expert reviewers spend hours testing and comparing guitar products so you can choose the best for you. Find out more about how we test.

The CE-1 Chorus Ensemble and the RE-201 Space Echo may be long-gone 1970s designs, but they live on – and perhaps not in their original, intended roles. 

While the CE-1 provided luxurious chorus and vibrato and the RE-201 offered mellifluous tape echoes, those effects were coloured and enhanced by the sound of the preamps in each unit, something that guitarists found that they favoured, at times using the units with the effects bypassed just for the extra that the preamp offered. 

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Trevor Curwen

Trevor Curwen has played guitar for several decades – he's also mimed it on the UK's Top of the Pops. Much of his working life, though, has been spent behind the mixing desk, during which time he has built up a solid collection of the guitars, amps and pedals needed to cover just about any studio session. He writes pedal reviews for Guitarist and has contributed to Total Guitar, MusicRadar and Future Music among others.