u Stewart Audio - DA70-4
Stewart Audio


*DISCONTINUED* 4 Channel Digital Amplifier - 35W x 4 @ 8Ω

The DA70-4 has been discontinued.
4 channel all-digital power amplifier delivering over 70 watts per channel in just a half-rack space.

  • • Ultra Efficient All Digital Design
  • • Switch Mode Power Supply
  • • Convection Cooled (No Fans)
  • • Very Low Power Consumption
  • • Multi-Channel Compact Half Rack Package
Front Image | Back Image (Click Image to Zoom)
The DA-70 Series Professional Series Power Amplifier utilizes a high speed switching power supply and Damped Ternary Modulation Digital output topology. The amplifier will deliver over 70 Watts of power per channel and may be purchased in either a 2 or 4 channel configuration. This remarkable performance comes in a very compact package weighing a mere 3.0 lbs and occupying just one-half standard rack space. The DA-70-2 Series Amplifiers are convection cooled making them extremely quiet so the only sound you will hear are the ones you produce. The all-digital Compact Series was specifically designed to meet the rigorous requirements of Sonic Accuracy, High Efficiency, Low power consumption and extended duty cycles in a very compact half rack package.

8 Ohm Stereo Power 35W x 4
4 Ohm Stereo Power 70W x 4
Frequency Response (+0, -0.5dB, 1W) 20Hz - 20kHZ
Full Power Bandwidth (+/.5 dB) 20Hz - 20kHz
Signal to Noise Ratio >85dB
THD+N <.1%
Input Sensitivity 1V (0 dBV)
Standard Voltage Gain 17x (25dB)
Input Impedance (Balanced/Unbalanced) 10k Ohms/5k Ohms
Idle Current Draw, 1/8 Power Draw 0.16, 0.5A
Class Damped Ternary Modulation
Input Connectors Phoenix Type
Output Connectors Phoenix Type
Power Supply High-speed Switching
Cooling Convection-Cooled (No fans)
Controls Power, Channel Gain
LED Indicators Power & Clip
Construction Steel & Aluminum Chassis
Operating Voltage 120VAC
Dimensions (H,W,D) 1.75"H x 8.26"W x 10.6"D
Weight 3.4lbs (1.54kg)
Warranty 3 years

This kit allows you to rack mount one CVA100 amplifier in a single rack-space (1U).

This kit allows you to rack mount two CVA100 amplifiers in a single rack-space (1U).

Product Datasheet PDF
User Manual PDF

Faceplate Options Stencil Library - Visio Editable VSD