¡Obtenga asesoría en español!  Llámenos hoy a (800) 222-4701

ISP Technologies Theta Pro DSP Preamp and Multi-effects , $1,382.00 - Add to Cart Skip to Product Information

ISP Technologies Theta Pro DSP Preamp and Multi-effects

Preamp and Multi-effects Pedal
Item ID: ThetaProDSP
ISP Technologies Theta Pro DSP Preamp and Multi-effects
We Can Get It Fast!

While this isn't an item we normally stock, we can still get it to you as fast as possible 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 October 5, 2026

Ask An Expert Our Expertly trained Sales Engineers are ready to help! What is a Sales Engineer?
Sweetwater Gear Exchange

Have one to sell?
Check out Sweetwater's Gear Exchange!
Learn More

ISP Technologies Theta Pro DSP Preamp and Multi-effects
We Can Get It Fast!

While this isn't an item we normally stock, we can still get it to you as fast as possible 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 October 5, 2026

Preamp, Effects, and Impressive Versatility

This article was Written By

Our Product Research Team

Get to know them!

More than a guitar preamp, effects processor and floor controller, the ISP Technologies Theta Pro DSP pedal is ready to be the heart of your guitar rig. It's a fully-programmable digital version of ISP's acclaimed Theta Preamp, and it can serve up ultra-high-gain tone with no aliasing. Create your own custom effects chain, then simultaneously drive your amplifier rig while sending speaker-emulated outputs direct to the PA system. Guitarists and engineers at Sweetwater are impressed with the versatility of the ISP Technologies Theta Pro DSP pedal, and we're sure you'll find it more than capable both on stage and in the studio.

ISP Technologies Theta Pro DSP Preamp Pedal at a Glance:
  • Your one-stop tone shop for electric guitar
  • True Speaker emulated output for huge tone without a speaker cabinet
  • Ultra-quiet operation with Decimator noise reduction built in
Your one-stop tone shop for electric guitar

In all, the ISP Technologies Theta Pro DSP pedal can serve several duties in your guitar rig. It's a tone-packed preamplifier with impressive sonic range - from rich and clean to the highest-gain tone, this preamp has you covered. You get a range of great-sounding effects, with individual control over each from the smart switching layout. 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. Save up to 256 of your custom presets for instant recall. When you're ready to rock you can plug into your power amplifier, send a speaker emulated output direct to the sound system or recording device, or even both simultaneously. There's even a tuner (accurate to a 1/2 cent) onboard!

True Speaker emulated output for huge tone without a speaker cabinet

ISP Technologies calls the 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 Theta Pro DSP preamp pedal.

Ultra-quiet operation with Decimator noise reduction built in

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

ISP Technologies Theta Pro DSP Preamp Pedal Features:
  • Preamp and multi-effects pedal for electric guitar
  • Based on the acclaimed Theta digital preamp pedal
  • Redesigned DSP platform with 32-bit floating point processing for 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 studio 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
Make the ISP Technologies Theta Pro DSP the brain of your guitar rig!

Warranty Info

Sweetwater's FREE 2-Year Total Confidence Coverage Warranty

Extra peace of mind at no extra cost.

  • Save money with FREE parts and labor
  • Get back to making music with the industry's fastest turnaround time
  • Fix it the first time with our award-winning, factory-certified Service Department
Learn More about Total Confidence Coverage

Offer applies only to single-receipt qualifying purchases. Select manufacturers may require that only the manufacturer’s products qualify towards the minimum purchase amount needed to be eligible for promotional financing. Otherwise, an invoice that meets the minimum purchase amount and contains at least one qualifying manufacturer product is eligible for promotional financing. No interest will be charged on promo purchase balance, and equal monthly payments are required on promo purchase until it is paid in full. The payments equal the amount financed divided by the number of months in the promo period, rounded up to the next whole dollar. These payments may be higher than the payments that would be required if this purchase was a non-promo purchase. During the last month(s) of the promo period the required monthly payment may be reduced due to the prior months’ rounding. Regular account terms apply to non-promo purchases. New Accounts as of 07/31/2025: Purchase APR is 34.99%. Penalty APR is 39.99%. Min Interest Charge is $2. Existing cardholders: See your credit card agreement terms. Subject to credit approval.

Offer applies only to single-receipt qualifying purchases. No interest will be charged on the promo balance if you pay it off, in full, within the promo period. If you do not, interest will be charged on the promo balance from the purchase date. The required minimum monthly payments may or may not pay off the promo balance before the end of the promo period, depending on purchase amount, promo length and payment allocation. Regular account terms apply to non-promo purchases and, after promo period ends, to the promo balance. New Accounts as of 07/31/2025: Purchase APR is 34.99%. Penalty APR is 39.99%. Min Interest Charge is $2. Existing cardholders: See your credit card agreement terms. Subject to credit approval.

The estimated required monthly payment shown which excludes taxes and delivery equals the amount financed divided by the number of months in the promo period, rounded up to the next cent. During the last month(s) of the promo period the required monthly payment may be reduced due to this rounding. These payments apply only with the financing offer shown. If you make these payments by the due date each month, you should pay off this amount financed within the promo period, if it is the only balance you are paying off. If you have other balances on your account, this payment will be added to any other minimum monthly payments.

Applies only to select items from this manufacturer. Ask your Sweetwater Sales Engineer for more details.