ISP Technologies Theta Preamp
The 300-watt Theta Preamp continues the ISP tradition of innovation and offers a unique approach, with 300 watts available to deliver the thunderous low end.

The Theta Preamp provides 2 selectable input pre-distort preamplifiers. Using the Theta Preamp is like having 2 low-noise, extremely high quality preamp pedals at the input of the amplifier. Each front-end pre-amp has gain, bass, mid level and mid sweep which provides amazing pre-distort tone shaping. The amplifier's "Clean" and "Distort" circuits have the same post distort tone shaping. Tone beyond your wildest dreams! Extreme sonic flexibility. The Clean channel has additional tone shaping with the inclusion of a Presence control providing more than 20db of high frequency boost.

You want gain? The Theta has greater than 140db of gain and you can control it and make it useable because of the included dual independent full-featured Decimator Noise Reduction systems. The Theta incorporates "Dynamic Saturation Modulation"™, which delivers the actual feel of a saturated tube power amplifier. The Theta Preamp also packs a huge punch. Buck Waller (founder of Rocktron) and Derek Bowers, renowned IC design engineer (also formerly of Rocktron) developed the patented D-CAT power amplifier technology. The D-CAT is a super high current power amplifier technology capable of driving a .5-ohm load. This means that the D-CAT amplifier delivers fantastic transient response and punch.