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Pimping Your Ride with Sony's XM-ZR704 Amp and XS-GTX Speakers

by February 20, 2013
Pimping Your Ride with Sonys XM-ZR704 Amp and XS-GTX Speakers

Pimping Your Ride with Sony's XM-ZR704 Amp and XS-GTX Speakers

  • Product Name: XM-ZR704 Amp and XS-GTX Speakers
  • Manufacturer: Sony Electronics
  • Performance Rating: StarStarStarStar
  • Value Rating: StarStarStarStarhalf-star
  • Review Date: February 20, 2013 22:00
  • MSRP: $ 179 (amp), $50 rear speakers, $100 front speaker system
  • Buy Now

Amplifier Section

  • Max power output: 700W max power
  • Power Ad Hoc: 70W per channel at 4 Ohms from 20Hz-20kHz with < 1% THD1
  • Speaker Impedance: 2-8 Ohm stereo (4-8 Ohms mono)

Inputs and Outputs

  • Audio In: RCA Pin Jacks, High Level Input Connector
  • Audio Out: Speaker Terminals
  • Input(s): RCA Pin Jacks and High Level Speaker Input Connector
  • Line Level Input(s): RCA pin jacks
  • Output(s): Speaker Terminals
  • RCA Audio Input(s): Pin Jacks: 0.3 - 6V

Weights and Measurements

  • Dimensions (Approx) Depth: 9-7/8"
  • Dimensions (Approx) Height: 2-1/4"
  • Dimensions (Approx) Width: 16-3/4"
  • Dimensions (Approx.): 16-3/4 x 2-1/4 x 9-7/8" (424 x 55 x 248 mm)
  • Weight (Approx.): 6lb 14oz


  • Band: Low Pass Filter: 50-300 HZ, -12dB/octHigh Pass Filter: 50-300 HZ, -12dB/oct
  • Circuit System: OTL Output Transformerless CircuitPulse Power Supply
  • Frequency Response: 10-100kHz (+0/-3 dB)
  • Harmonic Distortion: 0.05% (1kHz)
  • Impedance: 2-8 Ohms Stereo,4-8 Ohms Mono
  • Input Level: 0.3 - 6.0V (RCA input)1.2 - 12.0V (High Level Input)
  • Low Boost: 0-10dB (40Hz)
  • Noise Level: 93 dBA
  • Power Supply: OTL Output Transformerless CircuitPulse Power Supply
  • Signal Circuitry: 6-70Hz Variable -12 dB/Octave Subsonic filter

Audio Features

  • Level Control: High Level Input: 3.0 - 12V


  • Impedance: 2-8 Ohms in Stereo Mode (4-8 Ohms mono)
  • Speaker Terminal Type: Gold plated terminals


  • Current Drain: At rated output: 45A (at 2 Ohms) Remote Input: 1 mA
  • Input Voltage: 10.5-16V Power Supply Voltage
  • Internal Power Supply: OTL Output Transformerless CircuitPulse Power Supply
  • Output Power: Maximum Output: 350W x 2 (at 4 Ohms); 150W x 4 (at 4 Ohms)
  • Power Requirements: 12V DC Car Battery (Negative Ground)
  • Rated Output: 70W x 4 (20Hz-20kHz, 1% THD, at 4 Ohms, 14.4V)80W x 4 (20Hz-20kHz, 1% THD, at 2 Ohms, 14.4V)160W x 2 (20Hz-20kHz, 1% THD, at 4 Ohms, 14.4V)



  • Articulate highs
  • Easy and flexible installation
  • Easy amp terminations


  • A tad bright out of the box


It's not often that you get a chance to "pimp" your ride, so when Sony suggested we take a look at their newest ZR Series amplifier and their GTX speakers, we ran out and immediately located a victim, er... test vehicle. The experiment was simple: remove the stock system and replace it with the upgraded amplifier and speakers and note the differences. The proposition was this: would an upgrade of just the speakers make a huge enough difference in a car audio system? Or does it take a complete overhaul. Well, the results were eye-opening to say the least, but we actually ran the experiment both ways (having installed a separate XAV-701HD head unit in a separate vehicle, while keeping the stock speakers) and this was part 2.
About the author:
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Clint Deboer was terminated from Audioholics for misconduct on April 4th, 2014. He no longer represents Audioholics in any fashion.

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