Item #: ISP THETAPEDAL LIST

ISP Technologies Theta Guitar Pre Amp Pedal

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Product Description

Now experience the performance of the Theta preamp in this high gain pedal. Featuring a full pre-distort preamplifier and high gain distortion stage, the Theta preamp pedal also includes a full implementation of the award winning Decimator G-string II circuit.

The Preamplifier section includes controls for Gain, Bass, Midrange boost/cut Level and Midrange Sweep from 300 to 3KHz, Treble and Preamp Level. The Preamp section can be used stand-alone for clean tone shaping and/or used to overdrive the front of the THETA High Gain distortion stage.

ISP Technologies Theta Preamp Pedal Features

  • Pre-Distort Preamp usable for overdrive of Distortion circuit or for clean tone shaping / overdrive
  • Incredible tone shaping with Pre-Distort tone includes Bass, Mid Level, Mid sweep from 300 to 3KHz and Treble
  • THETA Distortion circuit with post distort Bass, Mid Level, Mid Sweep from 300 to 3KHz and Treble
  • Highest gain Distortion available anywhere, greater than 160dB of gain using Distortion and Pre-Distort Preamp overdrive
  • Decimator G-string II noise reduction built in for absolute silent operation and greater than 80dB NR
  • Footswitch selectable dual Gain1 / Gain2 settings
  • +/-15volt internal operation for professional headroom and sonic clarity
  • Dynamic Saturation Modulation circuit emulates a saturated tube amp with tube rectifier
  • Externally controllable switching of all footswitch functions for control via MIDI control function
  • Includes power supply

The Distortion controls include footswichable Gain 1 and Gain 2 for selection of a crunch and over the top gain, Bass Midrange boost/cut Level, Midrange Sweep from 300 to 3KHz, Treble and output level.

The Decimator G-String II circuit has a Decimator Threshold control and provides the full Time Vector Processing circuit with the latest Decimator improvements of Linearized release response, which improves the smoothness of the release response of the Decimator.

Another incredible feature we added is Dynamic Saturation Modulation, which emulates the spongy modulated dynamics of a full throttle tube amplifier with a vintage tube rectifier power section. While subtle, this adds yet another dimension to the THETA performance.

The trademark sound of the THETA amplifier series is over the top gain and sustain with over 160db of gain on tap and incredible tone shaping flexibility. The front end Preamplifier can be used to over-drive the input section of the THETA distortion circuit with mind blowing amounts of gain and pre-distort tone shaping. The only way we can provide this level of gain is due to the inclusion of the on-board Decimator G-String II circuit, which tracks the envelope of the input signal and provides greater than 80db of noise reduction.

The THETA PREAMP PEDAL is a true professional guitar Preamplifier with an internal +/-15 volt power supply providing more than 3 times the headroom of a typical 9 volt pedal. This amount of headroom is required for proper tone shaping and a higher level of performance than would otherwise be possible with a standard 9 volt power supply.

Add to all of these features dual remote control jacks, which allow all of the THETA PREAMP PEDAL switch functions to be controlled via MIDI control functions or simple switch closure, and you have one powerhouse Guitar Preamplifier.

The THETA distortion circuit is in a class of its own with better sensitivity, response and tone than any other guitar preamplifier. The discerning player knows how much better you can play when the response between their fingers and their ears becomes magic. That is the definable level of performance that the THETA provides.

CALIFORNIA PROPOSITION 65 WARNING
warning WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.


CALIFORNIA PROPOSITION 65 WARNING
warning WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.

See all items from ISP Technologies
Helpful Info about the Manufacturer
Phone:  248-673-7790 Warranty:  3 Year Pedals; 2 Year Rack Processing

Product Specifications

Customer Reviews

Dan Submitted: 11/20/2017
Product Rating
verified
Subject
Its like buying a new amp
Product Rating
What is your opinion of this product?
The sound is beautiful, very clear, but with the ability to get that heavy, raw, rough sound...the decimator is icing on the cake...every guitarist should have this pedal, especially at the price, well done ISP.
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Marc Submitted: 4/14/2015
Product Rating
verified
Subject
Love it.
What is your opinion of this product?
Rounds out the notes nicely. Great array of sounds. Plus a really good noise gate. Can't go wrong. Made in the USA also.
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Michael Magnuson Submitted: 1/29/2015
Product Rating
verified
Subject
I love this pedal!
What is your opinion of this product?
I got this pedal this morning and used it at rehearsal tonight through the effects return of my Peavey JSX..100 W tube amp. The two gain sections sound great and I was able to hear myself clearly no matter how much gain I was using. Very clear, which I love, because it gives me such freedom. Even my bandmates were really impressed. I look forward to using it at gigs. Very happy with this purchase.
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Harley J Banks, harleyjbanks@gmail.com Submitted: 8/31/2014
Product Rating
verified
Subject
love it!! my pride and joy on my pedalboard
What is your opinion of this product?
I thought id use this for the crazy amount of distortion. but so far I prefer my marshall dsl 100h gain/distortion (until I can get a load box) and i am using this for the preamp tone shaping and the decimator. both are phenominal. I absolutley love how the decimator will follow the signal so the order of your pedals on the pedal board are unaffected. the pedals that come after this one in the chain, the excess noise is still removed, just make sure the preamp is on at minimum. Very very flexible pedal with wonderful tone. cant wait to explore more with this.
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E.J.Todd from Granite Falls, WA Submitted: 9/10/2013
Product Rating
verified
Subject
Extensive tone shaping, distortion, noise supression for a tone fiend!
Your general opinion of this product.
Outstanding!
Made VERY well, VERY dependable.
The feel of the knobs and switches are (for lack of a better term) High end.
The tone shaping (and molding) ability of this device is extreme and indeed multi faceted, multi layered yet surprisingly intuitive...and I've owned and used MANY such pedals (Keely, Bogner, TC, Boss, EH etc.) all high end, this one takes top honors. The multiple gain stages are perfectly integrated with the multiple tone stages. It doesn't matter what genre you're into, this thing literally does it all. Work with it a bit and you'll find EXACTLY what you're looking for...and then some!
N/A
Sexy.
I've had it a couple of weeks now but (with power conditioning and surge pro) I for see this unit being fully functional for decades at the least. It's built like a tank.
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Paul from N of Dallas TX Submitted: 8/28/2013
Product Rating
verified
Subject
A real actual Preamp in a pedal more than a mere distortion...
Your general opinion of this product.
ISP has shocked me in the higher end gear they make. I just thought they did NR pedals. I had never heard of the Theta preamp or amp rig. Now this new pedal format Theta preamp.
Superior quality here. The pedal is expensive but this is no basic distortion pedal or mere overdrive of standard fair. Control pots have a good firm but smooth quality component feel. Jacks are reversed on the in and out which makes for a little different patch cable issue. Maybe to emphasize this pedal is not your basic guitar pedal. It runs of VAC "not DC" and the supplied wart is a 9VAC 2000mA reverse pin positive jack, pretty substantial current. No real tubes inside but a much higher voltage pump circuit.
Unit has great response and feel, a wide range of gain structures and EQ ability and the built in Decimator II circuit kill the noise on uber gained tones. The Decimator itself is a marvel. Not your basic noise gate clamper, feels the music and adjusts its release and downward expansion to fit the signal coming in.
There are many options here on tone, the stand alone preamp channel which is the reason I got this unit can be used as a primary preamping stage with minimal gain or also used into the 2 gain level distortion channel. This unit is capable of massive heavy voiced gain which remaining note articulate and a gain structure that feels great under your hands.
Red is fine. Personally I get fatigued by the pedal rainbow look all the time. I wish all my pedals were just black with gold knobs that would be very cool and more professional looking. Red on black is OK, could be much worse.
ISP makes quality high end gear. See no reason why this unit should not hold up well.
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Joseph Rayas Submitted: 6/13/2013
Product Rating
verified
Subject
Best Pedal Style Preamp and Distortion!
Your general opinion of this product.
OMG THE best money I have ever spent on a Distortion pedal and worth every penny!
Solid! Silent Switching!
Easy intuitive controls. The only thing I could possibly complain about is that the Input and Send ports are switched so it was a little weird to chain with standard pedals but I was able to modify my pedal board no problem.
Buttery Overdrive in the Preamp Overdrive and ultimate saturation on the Distortion Channel. Sounds sweet when you combine the two as well. Sounds sooooo damn GOOD! Built in Noise Suppressor kills!
Love the Red!
Only had it a month but I think it will stand the test of time no problem.
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