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ISP Technologies MS Theta Pro DSP Michael Sweet Preamp and Multi-effects Pedal

Guitar Preamp and Multi-effects Pedal with 32-bit Floating Point DSP and Speaker-emulated Output
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Item ID: MSThetaProDSP
ISP Technologies MS Theta Pro DSP Michael Sweet Preamp and Multi-effects Pedal
Price:$1,409 and 00 cents
$235.00 suggested monthly payment§ with 6 month special financing‡

We Can Get It!

While this isn't an item we normally stock, we can still get it due to our great relationship with ISP Technologies. Go ahead and place your order and we'll follow up shortly to let you know when to expect it. Estimated July 2026.

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ISP Technologies MS Theta Pro DSP Michael Sweet Preamp and Multi-effects Pedal
We Can Get It!
Price:$1,409 and 00 cents
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Stryper Tone in a Box — And So Much More

Michael Sweet of Stryper has inspired fans the world over with his holy hair-metal tones: his tight, controlled chug; his smooth, sailing leads; and his tasteful bouquet of stereo effects. Now you can cop Michael's exact sound with the ISP Technologies Michael Sweet Theta Pro DSP guitar preamp/pedal. When we say exact, we mean it — this is the very same box Michael uses out on the road with Stryper. It ships with 11 of his personal presets and includes several enhancements over the original Theta Pro DSP. These include a 3-band parametric EQ, post-distortion bass and treble to smooth and sculpt dirt, a tuner, and a totally realistic rotary speaker effect. The ISP Michael Sweet Theta Pro DSP comes in a righteous Stryper-black-and-yellow chassis with Michael's silkscreened signature.

How does it stack up to the Theta Pro DSP?

Beyond Michael's enhancements, this is the same ISP Technologies Theta Pro DSP — the floor-controlled guitar system with the vintage preamp, bounteous gain, and complete suite of studio-quality 32-bit effects — that has had the guitar industry all hot and bothered the past year. Build exciting effects chains with a wah, compressor, multistage stereo phaser, stereo flanger, tremolo, four-voice chorus, pitch shifter, stereo rotary speaker, 1,300 millisecond delay, stereo ping-pong delay, and reverb. There's even a tuner (accurate to a 1/2 cent) onboard. It's literally all you need to achieve the tones your live shows demand. Run the ISP Michael Sweet Theta Pro DSP into an amp stack for the genuine article, or direct out into a PA via the speaker-emulated out for portable performance done right.

Your one-stop tone shop for electric guitar

From rich cleans to the highest gains, the Michael Sweet Theta Pro DSP has you covered. You get a range of great-sounding effects with individual control over each via the smart switching system. Save up to 256 of your custom presets for instant recall, or choose from Michael's included Stryper tones for instant inspiration. And Sweetwater guitarists appreciate the fact that you can plug into your power amplifier, send a speaker emulated output direct to the sound system or recording device, or even both simultaneously.

Huge tone without the speaker cab

ISP Technologies calls the Michael Sweet Theta Pro DSP's speaker-emulated technology "True Speaker" convolution, because you have practically as much control over your tone as if you were miking a real guitar amplifier's speaker. It emulates vintage speaker models with amazing results, and you can alter the sound by repositioning the virtual microphone. Whether you want to record in your studio without a loud speaker cabinet, or want to reduce volume on stage during gigs, you'll appreciate the flexibility of the Michael Sweet Theta Pro DSP preamp pedal.

Ultra-quiet Decimator noise reduction

You won't struggle with buzz and hum with the Michael Sweet Theta Pro DSP in your guitar rig. It has ISP Technologies' acclaimed Decimator noise reduction technology built right in, ready to cut out noise without impacting your tone or playing dynamics. Even if your tone relies on ultra-high gain settings, your rig will be whisper quiet with the Michael Sweet Theta Pro DSP.

ISP Technologies Michael Sweet Theta Pro DSP Features:

  • All the power of the original, and then some
  • The very unit Michael Sweet takes out on the road with Stryper
  • Includes 11 of Michael's personal presets
  • Enhanced with 3-band parametric EQ, post-distortion EQ, tuner, and rotary speaker effect
  • Vintage-inspired guitar preamp handles rich cleans and high gain
  • 32-bit floating point DSP provides amazing depth, detail, and dynamic
  • Build exciting effects chains with a wah, compressor, multistage stereo phaser, stereo flanger, tremolo, four-voice chorus, pitch shifter, stereo rotary speaker, 1,300 millisecond delay, stereo ping-pong delay, and reverb
  • Pedalboard-style control over wah, mod, and delay effects
  • Rugged and ready for the road
  • Stereo outputs for your guitar rig
  • Stereo speaker-emulated outputs for great tone without a speaker cabinet
  • Onboard tuner is accurate to a 1/2 cent

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Tech Specs

  • Pedal Type: Multi-FX, Preamp
  • Effects: Phaser, Flanger, Chorus, Delay, Rotary, Reverb, Wah, Cab Emulation, Mic Emulation
  • Expression Control: 2 x 1/4" (pedal, switch)
  • Inputs: 1 x 1/4" (instrument)
  • Outputs: 2 x 1/4" (main out), 2 x XLR (direct out), 1 x 1/8" (headphones)
  • Other I/O: 1 x 1/4" (volume pedal)
  • Features: True Speaker modeling, built-in tuner, compressor, 3-band parametric EQ
  • Power Source: 9V AC power adapter (included)
  • Height: 4"
  • Width: 17"
  • Depth: 9"
  • Weight: 7 lbs.
  • Manufacturer Part Number: SIGNATURE MS THETA PRO DSP

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Reviews

Best Pedal
I have owned a lot of pedals through the past 40 years and I have yet to own one that has so many sounds. 223 pre-sets to include the Stryper sounds. They will raise the price and they need to. Way more then it should be.

Get it while the price is low.
Music background: Christian Metal
The Decimator puts the Theta DSP above all competition!
As everyone has said here, the guitar tones and effects are incredible, with the most variable EQ and usable, high quality, tight, high gain of anything I've tried in 52 years of playing the guitar. Unbelievable.

But I need to talk about the Decimator noise gate / suppression. This noise control is what allows so much gain to actually be usable. In other rigs, if we'd dial up gain levels as high as the Theta offers up, noise gates out there might suppress when you stop playing, albeit with a slight noise tail and popping artifacts; Theta has no noise tail or pops with the Decimator baked into the signal path. None.

Also in other high gain rigs, the gate can gate the noise, in a messy way as described above, but noise is still in your signal WHILE you play! The Decimator also extracts all hum and hiss from your signal...while you're playing!

Now this characteristic is rarely mentioned when noise gates are reviewed: how longer sustained notes experience a ragged break up, interspersed with noise, as the notes fade out. This does not happen on the Theta DSP, only natural smooth note decay, with zero noise interspersion.

These noise gate / suppression characteristics make it seem like it's not high gain at all, just sustain for days with effortless legato, without having to deal with hiss and hum. This is magic! This is amazing, and has to be experienced to truly understand how your playing can effortlessly shred and soar.

Want to play like the sustaining lead guitar as in "That Lady" by the Isley Brothers, at conversation volume, or high volume? Theta DSP is your Huckleberry.

I called iSP customer service with a question, and Buck Waller actually picked up, answered my question, and talked to me about his industry stories for 42 minutes!!!

Thanks Buck Waller for the best guitar rig I've ever played!!!
Music background: Have been semi-pro at times, 48 years of gigging experience.
Incredible sound! Top notch costumer service!
This processor has everything you need and sounds incredible! Customer service is also to notch! I'm not very tech savvy and had some questions about set up and called ISP. Buck Waller explained the unit with great detail and answered all my questions. If you're on the fence on buying this I would not hesitate! The noise desimator on this unit is the best I've ever heard along with the Effects and multiple amp and speakers selection sounds make this the most versatile piece of equipment I own!
Music background: Guitar player
Incredible sound and response
This pedal delivers everything they advertise and more. The preset sounds are amazing and the product is very easy to operate. If you are looking for an "All-in-One" pedal that is easy to use, has great responsive sound, is light weight and gives you unlimited options, then do yourself a favor and check this pedal out. That is the only way you can truly appreciate how great this is.
The incredible ISP Theta
After spending a few day with the Theta Pro MS, I began to understand how great this unit is. Any tone is possible if you just spend a little time with it. Amazing high gain great cleans and the on board effects are incredible. I really love the chorus and delay. Just Amazing!!!!!!!!! Thank you ISP for such awesome products.