ST-D Amplifiers

The new Class-D Compact Amplifiers.
Power and Performance in the smallest spaces.
The ST-III amps were the first to get the new Studio brushed aluminum finned chassis, with the standard measurements for all models of 16 cm (W) and 5.8 cm (H). With the new ST-D Compact Series we've decreased these dimensions to 12.4 cm (W) and 5 (W), further reducing an already compact chassis.
The small size does not mean reduced performance or control possibilities. Also in the ST-D Compact Series you will have the possibility to use RCA or Speaker Level inputs, variable input gain control, variable electronic crossover and bass boost control.

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Original price $555.56 - Original price $555.56Original price$555.56$555.56 - $555.56Current price $555.56| /
Zapco - ST-104D SQ MINI - Class D, 4-Ch, optional HD-BT Power 2Ω: 4 x 120W, 4Ω: 4 x 95W
Zapco2+ in stock• Configuration: 4-Channel, Full-Range, Class D Mini Amp• Power Output: • 120 W × 4 @ 2 Ω • 95 W × 4 @ 4 Ω • Bridged Output: 240 W × 2 @ 4 Ω• TH...
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-64D SQ MINI - Class D, 4-Ch, optional HD-BT Power 2Ω: 4 x 75W, 4Ω: 4 x 50W
ZapcoOut of stockThe Zapco ST-64D SQ MINI is a compact Class D 4-channel amplifier designed for sound quality enthusiasts who demand high fidelity in a small form f...
View full detailsOriginal price $416.67 - Original price $416.67Original price$416.67$416.67 - $416.67Current price $416.67| /Sold out -
Original price $416.67 - Original price $416.67Original price$416.67$416.67 - $416.67Current price $416.67| /
Zapco - ST-501D SQ MINI - Class D, Mono Power 1Ω: 1 x 530W, 2Ω: 1 x 320W
ZapcoOut of stock• Model: ST-501D SQ MINI• Class: Class D (mono)• Power Output: • 530 W × 1 @ 1 Ω • 320 W × 1 @ 2 Ω • 180 W × 1 @ 4 Ω• THD (at rated power): < 0....
View full detailsOriginal price $416.67 - Original price $416.67Original price$416.67$416.67 - $416.67Current price $416.67| /Sold out -
Original price $416.67 - Original price $416.67Original price$416.67$416.67 - $416.67Current price $416.67| /
Zapco - ST-104D SQ III - Class D, 4-Ch, SQ Power 2Ω: 4 x 150W, 4Ω: 4 x 100W
Zapco2+ in stock• Power Output: • 4 × 100 W RMS @ 4 Ω • 4 × 150 W RMS @ 2 Ω • Bridged: 2 × 300 W RMS @ 4 Ω• Total Harmonic Distortion: < 0.5% at rated power• Si...
View full detailsOriginal price $416.67 - Original price $416.67Original price$416.67$416.67 - $416.67Current price $416.67| / -
Original price $416.67 - Original price $416.67Original price$416.67$416.67 - $416.67Current price $416.67| /
Zapco - ST-750D - Class D, Mono Power 2Ω: 1 X 750W, 4Ω: 1 X 400W
Zapco2+ in stock• Model: ST-750D The Zapco ST-750D is a compact Class D mono amplifier engineered for clean, efficient bass power in tight installations. Deliverin...
View full detailsOriginal price $416.67 - Original price $416.67Original price$416.67$416.67 - $416.67Current price $416.67| /