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Product 153074

HAO SP-1 Sole Pressure Overdrive Guitar Effects Pedal   

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Nails the sound of the legendary '59 Tweed Bassman 4 x 10 combo. The carefully selected components allow the user to dial in the smooth, creamy overd...Click To Read More About This Product

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Re-creates the sounds of a classic.

Nails the sound of the legendary '59 Tweed Bassman 4 x 10 combo. The carefully selected components allow the user to dial in the smooth, creamy overdrive of this classic amp, right down to the characteristic low-end sag unique to the combo version. Dual knobs control output and drive levels while 3 switchable EQ curves offer plentiful tonal options without compromising your guitar sound. This dual control configuration also allows the Sole Pressure to act as a semi-clean booster to coax more character out of your amp. If you're looking for the classic Fender amp tone that defined a generation, the Sole Pressure will let you achieve it with any guitar and amp in any playing situation, without the hassles of owning vintage gear.

  • Re-creates sounds of '59 Tweed Bassman 4 x 10 combo
  • Smooth, creamy overdrive
  • Characteristic low-end sag
  • Dual knobs control output
  • 3 switchable EQ curves offer plentiful tonal options without compromising your guitar sound

Review Snapshot

by PowerReviews

(based on 4 reviews)

Ratings Distribution

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Reviewed by 4 customers

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Most consistant OD ever

By Jcsstratguy

from Atlantic City, NJ

I've used alot of overdrive pedals, but the sole pressure by far is the smoothest most consistant overdrive I have ever used. Plug it into your bassman or twin and get a smooth clean boost, when used with a high gain amp watch out! The sole pressure is a must have for any effects rig, check it out!


A Rockin' Little Pedal

By Derrick C.

from Coffeyville, KS

See all my reviews

The HAO Sole Pressure is a good overdrive pedal if all you're looking for is good old-fashioned classic rock drive. I use mine with a Les Paul played straight through a Peavey 8-channel P.A. head that I use as an amp.[multiple guitar hook-ups] The crunch does not sound manufactured or fake.


Best Bassman Pedal

By bluesdeluxe

from Portland OR

I picked up this pedal on a trade and am quite happy with it. I will preface my review by reminding readers that boutique pedals are typically not plug-in-and-play instant gratification machines like Digitech and Line 6 pedals, but instead are sensitive and often quirky instruments. The Sole Pressure is as quirky as they come, often producing much different results from rig to rig.I play single coil guitars and have a bright set-up so this pedal worked well for me. It is very bass-heavy and is designed to give you the vibrant but loose break-up of the overdrive on a Fender Bassman amp. It is capable of doing this very well if you experiement with it. However I would not recommend this pedal for humbucker guitars since it is so bottom heavy and this cannot be dialed out.Using my friend's Peavey Valve King and Classic 50 amps I could get a Bassman sound right away with the pedal on the clean channel. However plugging into my Fender and Traynor amps the pedal sounded harsh and ugly. A previous reviewer said that the Sole Pressure sounded like the inferior fizzy drive channel on a Fender Hot Rod or Blues Deluxe amp. This can be true and that is how it sounded with the clean channel of my amps. However, if you dim the volume knob on your guitar and use the pedal in conjunction with your amp's drive channel it works great. I set my amp's drive to about 9 o'clock so the amp is being driven but there is no disernable distortion. Then I kick on the Sole Pressure set to about 2 o'clock on the drive knob. Then you really get a bassman sound. You might not be able to fool Brian Setzer or George Gruhn with it, but you could probably fool most people into thinking its a real Bassman in a blind test. I'd buy it again.



By Rick B.

from Central New Jersey

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I love the overdriven Fender tweed sound, especially from a Bassman. This pedal really doesn't pull that off. It's a nice overdrve, but a Bassman it isn't. I demoed this pedal along with 4 other Fender tweedish pedals with a Tele and a Strat into a Valvetrain amp and a Dr.Z. The Hao was good, but not authentic. It sounds more like the OD channel on a reissue Blues Deluxe, and that isn't too stellar. The pedal has good tone range, and the bright switch is a great authentic feature, but it just falls a little short in the singing tube world. When a Bassman goes into overdrive, the tubes compress. This pedal doesn't do that, and there's half the sound out the window.For a better emulation of a cranked tweed Bassman, try a Menatone Dirty Blonde or a Toadworks Lil Leo. You'll be much happier.

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