ST-X Series Amplifiers

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 ‘90 are still being traded and bought on the internet by sound quality fans world wide. The Studio-x will be no different.
These amps are built to last. See the Studio-X amps at a dealer today.




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Original price $138.89 - Original price $138.89Original price$138.89$138.89 - $138.89Current price $138.89| /
Zapco - HD-BT II-D - HD Bluetooth Module 120MHz DSP, aptX HD, Digital Out.
ZapcoOut of stockThe Zapco HD-BT II-D module adds high-resolution Bluetooth streaming to Zapco DSP and amplifier systems. With a built-in 120 MHz DSP and aptX HD co...
View full detailsOriginal price $138.89 - Original price $138.89Original price$138.89$138.89 - $138.89Current price $138.89| /Sold out -
Original price $694.44 - Original price $694.44Original price$694.44$694.44 - $694.44Current price $694.44| /
Zapco - ST-4X DSP III - Class AB, 4-Ch, DSP, optional HD-BT Power 2Ω: 4 x 90W, 4Ω: 4 x 65W
ZapcoOut of stockThe Zapco ST-4X DSP III merges Zapco’s legendary Class AB sound quality with advanced DSP control. Offering 4 channels of clean amplification with ...
View full detailsOriginal price $694.44 - Original price $694.44Original price$694.44$694.44 - $694.44Current price $694.44| /Sold out -
Original price $1,111.11 - Original price $1,111.11Original price$1,111.11$1,111.11 - $1,111.11Current price $1,111.11| /
Zapco - ST-6X DSP III - Class AB, 6-Ch, DSP, optional HD-BT Power 2Ω: 6 x 130W, 4Ω: 6 x 100W
ZapcoOut of stockST-6X DSP III – 6-Channel Class AB Amplifier with DSP Elevate your audio experience with the ST-6X DSP III, a powerful 6-channel Class AB amplifier...
View full detailsOriginal price $1,111.11 - Original price $1,111.11Original price$1,111.11$1,111.11 - $1,111.11Current price $1,111.11| /Sold out -
Original price $416.67 - Original price $416.67Original price$416.67$416.67 - $416.67Current price $416.67| /
Zapco - ST-68X DSP III - Class AB, 4-Ch, DSP, optional HD-BT Power 2Ω: 4 x 35W, 4Ω: 4 x 25W
ZapcoOut of stockDescription:The Zapco ST-68X DSP III is a compact 4-channel Class AB amplifier integrated with a powerful 6-in / 8-out DSP processor, offering the ...
View full detailsOriginal price $416.67 - Original price $416.67Original price$416.67$416.67 - $416.67Current price $416.67| /Sold out -
Original price $972.22 - Original price $972.22Original price$972.22$972.22 - $972.22Current price $972.22| /
Zapco - ST-2000XM III - Class D, Mono Power 1Ω: 1 x 2000W, 2Ω: 1 x 1450W
Zapco2+ in stock• Model: ST-2000XM III• Class: Class D, mono (single-channel)• Power Output: • 2,000 W × 1 @ 1 Ω • 1,450 W × 1 @ 2 Ω • 1,000 W × 1 @ 4 Ω• THD (at r...
View full detailsOriginal price $972.22 - Original price $972.22Original price$972.22$972.22 - $972.22Current price $972.22| / -
Original price $763.89 - Original price $763.89Original price$763.89$763.89 - $763.89Current price $763.89| /
Zapco - ST-1500XM III - Class D, Mono Power 1Ω: 1 x 1600W, 2Ω: 1 x 1150W
ZapcoOnly 1 left!• Model: ST-1500XM III• Class: Class D (Mono)• Power Output: • 1,600 W × 1 @ 1 Ω • 1,150 W × 1 @ 2 Ω • 800 W × 1 @ 4 Ω• THD (at rated power): < ...
View full detailsOriginal price $763.89 - Original price $763.89Original price$763.89$763.89 - $763.89Current price $763.89| / -
Original price $555.56 - Original price $555.56Original price$555.56$555.56 - $555.56Current price $555.56| /
Zapco - ST-1000XM III - Class D, Mono Power 1Ω: 1 x 1000W, 2Ω: 1 x 700W
Zapco2+ in stock• Model: ST-1000XM III• Class: Class D (Mono / single-channel)• Power Output: • 1,000 W × 1 @ 1 Ω • 700 W × 1 @ 2 Ω • 450 W × 1 @ 4 Ω• Total Harmon...
View full detailsOriginal price $555.56 - Original price $555.56Original price$555.56$555.56 - $555.56Current price $555.56| / -
Original price $416.67 - Original price $416.67Original price$416.67$416.67 - $416.67Current price $416.67| /
Zapco - ST-500XM III - Class D, Mono Power 1Ω: 1 x 400W, 2Ω: 1 x 300W
ZapcoOut of stock• Model: ST-500XM III• Class: Class D (Mono)• Power Output: • 400 W × 1 @ 1 Ω • 300 W × 1 @ 2 Ω • 200 W × 1 @ 4 Ω• Total Harmonic Distortion (THD):...
View full detailsOriginal price $416.67 - Original price $416.67Original price$416.67$416.67 - $416.67Current price $416.67| /Sold out -
Original price $972.22 - Original price $972.22Original price$972.22$972.22 - $972.22Current price $972.22| /
Zapco - ST-204D SQ III - Class D, 4-Ch, SQ Power 2Ω: 4 x 290W, 4Ω: 4 x 200W
ZapcoOut of stockThe Zapco ST-204D SQ III delivers exceptional sound quality and power in a compact footprint. Designed for system builders who demand clarity and p...
View full detailsOriginal price $972.22 - Original price $972.22Original price$972.22$972.22 - $972.22Current price $972.22| /Sold out -
Original price $833.33 - Original price $833.33Original price$833.33$833.33 - $833.33Current price $833.33| /
Zapco - ST-4XP SQ III - Class AB, 4-Ch, SQ Power 2Ω: 4 x 250W, 4Ω: 4 x 150W
ZapcoOnly 1 left!• Model: ST-4XP SQ III• Channels: 4 (Full-range Class AB)• Power Output: • 250 W × 4 @ 2 Ω • 150 W × 4 @ 4 Ω • Bridged: 500 W × 2 @ 4 Ω• Total Harm...
View full detailsOriginal price $833.33 - Original price $833.33Original price$833.33$833.33 - $833.33Current price $833.33| / -
Original price $416.67 - Original price $416.67Original price$416.67$416.67 - $416.67Current price $416.67| /
Zapco - ST-4X SQ III - Class AB, 4-Ch, SQ Power 2Ω: 4 x 95W, 4Ω: 4 x 70W
ZapcoOnly 1 left!The Zapco ST-4X SQ III offers signature Zapco sound quality in a compact Class AB design. Tuned for accuracy and musical warmth, it’s built for tho...
View full detailsOriginal price $416.67 - Original price $416.67Original price$416.67$416.67 - $416.67Current price $416.67| / -
Original price $500.00 - Original price $500.00Original price$500.00$500.00 - $500.00Current price $500.00| /
Zapco - ST-2XP SQ III - Class AB, 2-Ch, SQ Power 2Ω: 2 x 250W, 4Ω: 2 x 150W
ZapcoOnly 2 left!• Model: ST-2XP SQ III• Channels: 2 (Class AB, full-range)• Power Output: • 250 W × 2 @ 2 Ω • 150 W × 2 @ 4 Ω • Bridged: 500 W × 1 @ 4 Ω• Total Har...
View full detailsOriginal price $500.00 - Original price $500.00Original price$500.00$500.00 - $500.00Current price $500.00| / -
Original price $888.89 - Original price $888.89Original price$888.89$888.89 - $888.89Current price $888.89| /
Zapco - ST-6X SQ III - Class AB, 6-Ch, SQ Power 2Ω: 6 x 150W, 4Ω: 6 x 100W
ZapcoOut of stockThe Zapco ST-6X SQ III is a 6-channel Class AB amplifier built for true audiophile sound reproduction and system flexibility. Delivering 150 watts ...
View full detailsOriginal price $888.89 - Original price $888.89Original price$888.89$888.89 - $888.89Current price $888.89| /Sold out