Zapco ST-4X SQ 4 channel amplifier

Zapco ST-4X SQ

65w RMS x 4 with speaker level input options.

• 4-Channel, Full Range, Class A/B
• SQ Upgrades: Op-amps, Caps, Etc.
• Tiffany style Panel Mount RCA’s
• RCA and Speaker Level Inputs
• Variable input gain control
• Variable electronic crossover
• Auto-on with Speaker level inputs
• Compact chassis
• Variable bass boost control

The Studio-X line of amplifiers from Zapco was designed specifically for today’s car audio market. The Studio-X compact chassis makes it an easy fit in any car and even in motorcycle fairings.

The square, low profile chassis also means it will be easy to trim out for a great looking installation so your system will look as awesome as it sounds. And speaking of sound...This is a Zapco amplifier and sound is what it’s all about. These are Class A/B Zapco amplifiers.

The Studio-X have the same high-quality caps, op-amps, and bi-polar outputs that made the C2K and Reference series amps the industry standard for sound quality. 

Reliability? Zapco defines reliability. It’s not at all unusual to see Zapco amps moved from car to car and from generation to generation. Zapco Amps produced in the ‘90s are still being traded and bought on the internet by sound quality fans worldwide.

The Studio-x is no different.  These amps are built to last.

Features and Functions 

• Power @ 4Ω: 4 x 65 watts
• THD @ Rated Power  < 0.5% THD
• Power @ 2Ω: 4 x 95 watts
• Power Bridged @ 4Ω: 2 x 190W RMS
• Signal to Noise Ratio > 95dB
• THD + Noise < 0.05%
• Channel Separation  >60dB
• Frequency Response 15Hz to 30KHz ±1dB
• Input Sensitivity .25v to 5v
• Dimensions in mm: 160(W) x 52(H) x 282(L) Overall: 160(W) x 52(H) x 320(L)