Zapco ST-2X SQ 2 Ch. Sound Quality Class AB Amplifier

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 worldwide. The Studio-x will be no different.

Features and Functions

• 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

Specifications

• 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)

Features and Functions

• 6-Channel, Full Range, Class A/B

• On-Board, Full Function, 8-ch. Digital Signal Processing

• High-pass and low-pass filters, phase control, signal delay, and 15 channels of parametric equalization on each channel

• Optical Digital Input

• BT Streaming: Bluetooth Port for external APTX HD Module (optional)

Specifications

• Power @ 4Ω: 6 x 100 watts

• THD @ Rated Power  < 0.5% THD

• Power @ 2Ω: 6 x 150 watts

• Power Bridged @ 4Ω: 3 x 300W RMS

• Signal to Noise Ratio > 90dB

• THD + Noise < 0.2%

• Channel Separation  >60dB

• Frequency Response 15Hz to 30KHz ±1dB

• Input Sensitivity .25v to 5v

• Dimensions in mm: 160(W) x 52(H) x 452(L) Overall: 160(W) x 52(H) x 488(L)

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 worldwide. The Studio-x will be no different.

Specifications

• DSP Processor: Cirrus Logic CS47048    

• Power: 150 MHz/32 bit/48 KHz

• 8-Channels

• ADC: Cirrus Logic CS5368 24 bit/192 KHz

• ADC Dynamic Range/THD: 114 dB/-105 dB

• DAC: Cirrus Logic CS47048 32 bit/192 KHz

• DAC Dynamic Range/THD: 108 dB/-98 dB

• Low level (Pre)/Sensitivity: 8/1-5 VRMS

• High Level (Spk In)/Sens.: 6/2-20 V

• AUX Inputs/Sensitivity: 1/0.2-4 VRMS

• Optical IN: 24 bit-192 KHz

• Freq. Response (-3dB): 10 Hz - 22.5 KHz

• S/N Ratio only DSP Digital Input: 110 dBA    

• S/N Ratio only DSP Analog Input: 106 dBA 

• S/N Ratio Amp + DSP at max. power: 95 dBA 

• THD+N only DSP Digital Input: 0,002 %

• THD+N only DSP Analog Input: 0,005 %

• THD+N Amplif. + DSP Analog Input:  0,07 %

• Crosstalk at 1 Khz only DSP: 90 dB

• Crosstalk Amplifier + DSP: 45 dB

• Amp Power @ 4Ω: 8 x 80 watts

• Amp Power @ 2Ω: 8 x 120 watts

• Amp Power @ 4Ω Bridged: 4 x 240 watts

• Amp Power @ 4Ω: 6 x 80 + 1 x 240 watts

• Amp Power @ 2Ω: 6 x 120 + 1 x 240 w. (4 Ω) 

• F/R EQ: 1-6 ch Gr. & Par./31 poles

• Effect EQ: 7-8 ch Gr. & Par./11 poles

• Mute/Solo: Yes, each channel

• Time Align. (Range/Steps): 0/15 ms / 0.02 ms

• Max Delay (Cm/Steps): 515 cm / 0.68 cm

• Polarity: 0/180°

• Display (included): 1” LCD

• Display (optional): 3” LCD Touch-Screen

• Bluetooth Digital Streaming

• PC/Display Connection: USB/6-pin Mini DIN

• Unit Dimensions: 222(L) x 230(W) x 52(H)

• Display Dim.: 111(L) x 49(W)  x 16(H)

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 worldwide. The Studio-x will be no different

Features and Functions

• Single channel, Class D,  Bass Amplifier

• Compact chassis

• Variable input gain control

• Variable electronic crossover

• Variable subsonic filter

• Variable bass boost control

• Variable center frequency for bass boost

• variable phase control

• Strappable to use a pair of amps on a single voice coil

• Dash mount remote gain control

Specifications

• Power @ 1Ω: 1 x 1000 watts

• THD @ Rated Power  < 0.2%THD

• Power @ 2Ω: 1 x 750 watts

• Power @ 4Ω: 1 x 500 watts

• Signal to Noise Ratio > 85dB

• THD + Noise < 0.2%

• Efficiency > 85%

• Frequency Response 10Hz to 200Hz ±1dB

• Input Sensitivity .25v to 5v

• Dimensions in mm: 160(W) x 52(H) x 288(L) Overall: 160(W) x 52(H) x 314(L)

Zapco Studio-D amps put big power in a small chassis. But these little beasts aren’t just small, and they aren’t just powerful. They sound great! They had to earn the Zapco name before we put them into production. These amps are loaded with all the advanced features you would expect…and more! They have crossovers, bass boost, both RCA and Speaker level inputs, and preamp outputs to send the signal to another amp. The three larger chassis ST-D amps also have a dash remote control. Finally, the ST-D amps have Bluetooth Streaming, so your Smart Phone, iPad, or other Bluetooth devices can be a portable music source for your sound system.

When the Studio D BT amps are installed they work just like any other amps with your head unit. But if you fire up the music on your

phone, tablet, or other Bluetooth smart device, these amps will automatically switch over to Bluetooth to grab that signal.

Features and Functions

• 5-Channel, Full Range, Class D

• RCA and Speaker Level Inputs

• Bluetooth music streaming

• Variable input gain control

• Variable electronic crossover

• Variable bass boost control

Specifications

• Power @ 4Ω: 4 x 120 watts RMS, Plus 1 x 250 watts RMS

• THD @ Rated Power  < 0.5%THD

• Power @ 2Ω: 4 x 200 watts RMS, Plus  1 x 380 watts RMS

• Power Bridged @ 4Ω: 2 x 360W RMS, Plus 1 x 350 watts RMS

• Signal to Noise Ratio > 85dB

• THD + Noise < 0.5%

• Frequency Response 15Hz to 30KHz ±1dB

• Input Sensitivity .25v to 5v

• Dimensions in mm: 160(W) x 52(H) x 300(L) Overall: 160(W) x 52(H) x 342(L)

While sound quality is always the number one factor in a Zapco design, there are other factors in the Studio design that make them "every-day" amps. The extruded aluminum chassis is more compact and lighter to make the studio series an easier fit in today's smaller cars. The feature set of the Studio amps provides you with all the system versatility you need without adding additional components, with everything from crossovers to preamp outputs, so multiple amps don't require extra signal cables. Power, price, size, and performance.

No, it's not designed specifically for competition. This is an amp designed to knock your socks off... in your car, for your daily use, every day. So go ahead... pop in your favorite disk, grab the volume control, and see if you don't agree that dedication to sonic purity is definitely a good thing.

Features and Functions

• Mono Class-AB Amplifier

• MOSFET power supply

• RCA input and output

• Variable Inputs Gain Control

• Variable LP Electronic Crossover

• Variable Bass Boost

• Phase 0-180°

• Subsonic filter

Specifications

• Power @ 4Ω: 200 watts

• Power @ 2Ω: 300 watts

• THD @ Rated Power < 0.2%

• Signal to Noise Ratio > 97dB

• Input Sensitivity .25v to 5v

• Dimensions in mm: 182(W) x 52(H) x 280(L) Overall: 182(W) x 52(H) x 310(L)

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 worldwide. The Studio-x will be no different.

Features and Functions:

• Single channel, Class D,  Bass Amplifier

• Compact chassis

• Variable input gain control

• Variable electronic crossover

• Variable subsonic filter

• Variable bass boost control

• Variable center frequency for bass boost

• variable phase control

• Strappable to use a pair of amps on a single voice coil

• Dash mount remote gain control

Specifications:

• Power @ 1Ω: 1 x 2000 watts

• THD @ Rated Power  < 0.2%

• Power @ 2Ω: 1 x 1500 watts

• Power @ 4Ω: 1 x 1000 watts

• Signal to Noise Ratio > 85dB

• THD + Noise < 0.2%

• Efficiency > 85%

• Frequency Response 10Hz to 200Hz ±1dB

• Input Sensitivity .25v to 5v

• Dimensions in mm: 160(W) x 52(H) x 420(L) Overall: 160(W) x 52(H) x 446(L)

Zapco Studio-D amps put big power in a small chassis. But these little beasts aren’t just small, and they aren’t just powerful. They sound great! They had to earn the Zapco name before we put them into production. These amps are loaded with all the advanced features you would expect…and more! They have crossovers, bass boost, both RCA and Speaker level inputs, and preamp outputs to send the signal to another amp. The three larger chassis ST-D amps also have a dash remote control. 

Features and Functions

• 4-Channel, Full Range, Class D

• RCA and Speaker Level inputs

• Variable input gain control

• Variable electronic crossover

• Variable bass boost control

Specifications

• Power @ 4Ω: 4 x 180watts RMS

• THD @ Rated Power  < 0.5%THD

• Power @ 2Ω: 4 x 280 watts RMS

• Power Bridged @ 4Ω: 2 x 560 W RMS

• Signal to Noise Ratio > 85dB

• THD + Noise < 0.5%

• Frequency Response 15Hz to 30KHz ±1dB

• Input Sensitivity .25v to 5v

• Dimensions in mm: 160(W) x 52(H) x 300(L) Overall: 160(W) x 52(H) x 342(L)

Zapco Studio-D amps put big power in a small chassis. But these little beasts aren’t just small, and they aren’t just powerful. They sound great! They had to earn the Zapco name before we put them into production. These amps are loaded with all the advanced features you would expect…and more! They have crossovers, bass boost, both RCA and Speaker level inputs, and preamp outputs to send the signal to another amp. The three larger chassis ST-D amps also have a dash remote control. Finally, the ST-D amps have Bluetooth Streaming, so your Smart Phone, iPad, or other Bluetooth devices can be a portable music source for your sound system.

When the Studio D BT amps are installed they work just like any other amps with your head unit. But if you fire up the music on your

phone, tablet, or other Bluetooth smart device, these amps will automatically switch over to Bluetooth to grab that signal.

Features and Functions

• 4-Channel, Full Range, Class D

• RCA and Speaker Level inputs

• Bluetooth music streaming

• Variable input gain control

• Variable electronic crossover

• Variable bass boost control

Specifications

• Power @ 4Ω: 4 x 180watts RMS

• THD @ Rated Power  < 0.5%THD

• Power @ 2Ω: 4 x 280 watts RMS

• Power Bridged @ 4Ω: 2 x 560 W RMS

• Signal to Noise Ratio > 85dB

• THD + Noise < 0.5%

• Frequency Response 15Hz to 30KHz ±1dB

• Input Sensitivity .25v to 5v

• Dimensions in mm: 160(W) x 52(H) x 300(L) Overall: 160(W) x 52(H) x 342(L)

About ST-B Series amplifiers   

While the sound quality is always the number one factor in a Zapco design, there are other factors in the Studio design that make them "every-day" amps. The extruded aluminum chassis is more compact and lighter to make the studio series an easier fit in today's smaller cars. The feature set of the Studio amps provides you with all the system versatility you need without adding additional components, with everything from crossovers to preamp outputs, so multiple amps don't require extra signal cables. Power, price, size, and performance.

No, it's not designed specifically for competition. This is an amp designed to knock your socks off... in your car, for your daily use, every day. So go ahead... pop in your favorite disk, grab the volume control, and see if you don't agree that dedication to sonic purity is definitely a good thing.

Features and Functions

• 2-Channel, Class-AB Full Range Amplidier

• Stable into 4 ohms bridged or 2 ohms stereo load

• MOSFET power supply

• RCA and OEM speaker level input

• Variable Inputs Gain Control

• Variable FULL / LP / HP Electronic Crossover

• Variable Bass Boost

Specifications

• Power @ 4Ω: 2 x 65 watts

• Power @ 2Ω: 2 x 90 watts

• Power @ 4Ω Bridged: 1 x 180 watts

• THD @ Rated Power  < 0.1%

• Signal to Noise Ratio > 97dB

• Channel separation > 45dB

• Frequency Response 20Hz to 20,000Hz ±1dB

• Input Sensitivity .25v to 5v

• Dimensions in mm: 182(W) x 52(H) x 200(L) Overall: 182(W) x 52(H) x 230(L)

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 worldwide. The Studio-x will be no different.

Features and Functions

• 2-Channel, Full Range, Class A/B

• Tiffany style Panel Mount RCA 

• Speaker Level Inputs

• Variable input gain control

• Variable electronic crossover

• Auto-on with Speaker level inputs

• Variable bass boost control

• Compact chassis

Specifications

• Power @ 4Ω: 2 x 65 watts

• THD @ Rated Power < 0.5%

• Power @ 2Ω: 2 x 95 watts

• Power Bridged @ 4Ω: 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 154(L) Overall: 160(W) x 52(H) x 180(L)

Zapco Studio-D amps put big power in a small chassis. But these little beasts aren’t just small, and they aren’t just powerful. They sound great! They had to earn the Zapco name before we put them into production. These amps are loaded with all the advanced features you would expect…and more! They have crossovers, bass boost, both RCA and Speaker level inputs, and preamp outputs to send the signal to another amp. The three larger chassis ST-D amps also have a dash remote control. Finally, the ST-D amps have Bluetooth Streaming, so your Smart Phone, iPad, or other Bluetooth devices can be a portable music source for your sound system.

When the Studio D BT amps are installed they work just like any other amps with your head unit. But if you fire up the music on your

phone, tablet, or other Bluetooth smart device, these amps will automatically switch over to Bluetooth to grab that signal.

Features and Functions

• 2-Channel, Full Range, Class D

• RCA and Speaker Level Inputs

• Bluetooth music streaming

• Variable input gain control

• Variable electronic crossover

• Variable bass boost control

Specifications

• Power @ 4Ω: 2 x 380 watts RMS

• THD @ Rated Power  < 0.5%THD

• Power @ 2Ω: 2 x 550 watts RMS

• Power Bridged @ 4Ω: 1100 watts RMS

• Signal to Noise Ratio > 85dB

• THD + Noise < 0.5%

• Frequency Response 15Hz to 30KHz ±1dB

• Input Sensitivity .25v to 5v

• Dimensions in mm: 160(W) x 52(H) x 300(L) Overall: 160(W) x 52(H) x 335(L)