ISP Technologies Theta Pro DSP Preamp and Multi-effects

Preamp and Multi-effects Pedal
5/5 5 Write review Item ID: ThetaProDSP
ISP Technologies Theta Pro DSP Preamp and Multi-effects image 1
ISP Technologies Theta Pro DSP Preamp and Multi-effects image 1
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ISP Technologies Theta Pro DSP Preamp and Multi-effects
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Preamp, Effects, and Impressive Versatility

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!

Tech Specs

Pedal Type Multi-FX
Number of Effects 4
Manufacturer Part Number ThetaProDSP

Customer Reviews

5/5
Based on 5 reviews
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5/5

Amazing

I have this and the analog pedal. They sound very alike but the digital unit has way more control. It does not sound analog at all. It is not a Marshall boogie or fender sound at all it's a isp sound. It is basically a clean crunch lead with a lot of eq built in. Not a modeler at all but you could say that it models an isp amp. It is very easy to use but for the switching and routing I had to get the manual out. I like the fact that it doesn't have touch screens 10 knobs, USB etc. Not much to go wrong with it. This thing has amazing cleans too from crystal to fat jazz type tones. Very robust build. This unit excels at rock and metal tones but can do lighter crunch sounds amazingly well too. It is also very quiet even with the decimatior off. I have had the theata analog pedal for a few years and now this for abou 6 months. Isp rules.
5/5

Theta greater than kemper and axe fx

Greatest ever....a must try
5/5

Quality Tone

I have used guitar effects processors for 15 years stereo direct through the mixer. This guitar effects processor is supreme to any that I have owned. It allows pre & post eq to fine tune your tone. The built in decimator technology is awesome - noiseless tone. Has all the effects needed and makes your sound soar. I can achieve any tone I desire for electric and acoustic (with a piezo pickup). My setup: Parker fly deluxe guitar, 2 mission eng'g kemper model expression pedals, 1 for volume & 1 for expression, stereo xlr direct into a hi end mixer and front show system and it gives me a big sound. Also, a TC mini poly tune2 mini tuner with true by-pass.
5/5

Theta ROCKS again!!!!

I demoed the snot out of this thing at NAMM. Everything it's cracked up to be. Sonically, it's just amazing. And at NAMM, it was just a prototype!!! The Theta preamp is just like the analog versions you find in the head, combo, rack and floor pedal Theta. The four-voice chorus is rich, smooth, clear and incredible. Delay and reverbs that are lush and open. Tremelo, phaser (is excellent) and a great flange. An expression pedal out that can control any parameter you assign it to... two XLR outs with KILLER cabinet emulators and simultaneous 1/4 inch stage outs with their own separate volume so you don't have to fight the sound guy. A Vintage preamp for blues, jazz, rock and mid gain tones that is dynamic and response to pick attack and rolling off/on the volume knob on your guitar. A Jump feature to jump from one preset to another without scrolling... many other killer features... but most importantly ALL OF IT SOUNDS AMAZING. Decimator built in to kill any noise. Simply incredible...
Music background: Lifelong musician
4.5/5

Silly Good.

It's got kind,of an old school look/feel in comparison to all the other newer digital pedals. THIS IS WHAT I LOVE ABOUT IT! No super big screens, and extra useless bloatware. The tones are KILLER, and IMO surpass the Helix, Fractal etc. (after some tweaking for your speaker/s, setup, of course). I'm using it with a QSC K10 for monitoring on stage. We use K12s for Mains so what I'm hearing on stage is almost a perfect representation of what the audience is getting. This is great. Just set the "Stage Out" and "Main Out" EQ settings similar. I don't like having umpteen amp models to choose from, so this unit having just its own 3 channel preamp (Clean, Theta, and Vintage) and having enough EQ and shaping tools is perfect for me. You can dial in anything from Fender clean, to classic AC/DC, to flat out screaming metal. The presets were usable, but def needed some shaping. The dedicated volume knob for "Stage Out" monitor is sooo useful on the fly. Many of the competitive units are missing this. Its actually a huge deal for me. If I were to nitpick, I would say having one more front panel knob for adjusting the amount of gain (for whatever patch you're on) would be cool. It does not have a USB for updates, but honestly, I don't think I'll be needing any updates. Its that good. No tuner either, but I use a dedicated polyphonic tuner for that (and muting) anyway. Looks like the new MS Theta Pro DSP model has a tuner if you want one built in. In a nutshell, this is THE most underrated "all in one" pedal on the market. Best kept secret in the new wave of digital guitar processors. I've just shed over 100 pounds from my rig. Guitar, Pedalboard, and K10 monitor. That's it. Got a in my backseat. Goodbye 4x12 cabs and fragile inconsistent tubes. Thank you ISP !!!!
See also: Multi Effects Pedals, ISP Technologies, ISP Technologies Multi-effects