Audio Research SDA 1 Four Channel Power Amplifier

Great condition, consignment Audio Research SDA 1 : 4 Channel Spacial Definition Power Amplifier

Unit comes in original box, with a printed manual and attached power cord. The original internal packaging was degraded and we have replaced it with an acceptable alternative for shipping.

Unit is rated an 6/10 due to a couple of small marks near the top of the face, some scuffing along the heat sinks as well as one sink that has a small bend. The top of the unit has paint removed marks from being stacked, this issue was the main issue for the 6/10 rating.

Rated at 100 watts x 4 into 8 ohms (150 watts x 4 into 4 ohms), the SDA1 offers complete flexibility for installation in a wide range of multi-channel music systems. It can be used on its own, in a 4-channel system not requiring a center channel.
Alternatively, either of the two channel pairs can be bridged to produce 300 watts into 8 ohms, yielding a perfect 3-channel amplifier with higher power delivery to a center channel or passive subwoofer. Or, both pairs can be bridged simultaneously for a 300-watt per channel stereo amplifier. Inputs are balanced and single-ended.
Specifications:
Power output: 100 watts per channel into 8 ohms, 150 watts per channel into 4 ohms. 300 watts into 8 ohms, bridged
Power bandwidth: (-3dB points) DC to 150 kHz into 8 ohms
Input sensitivity: 1.5V RMS for rated output (25.5 dB Gain) unbalanced or balanced
Input impedance: 150K ohms unbalanced, 300K ohms balanced differential
Output regulation: 0.09dB 8 ohm load to open circuit
Overall negative feedback: 21 dB
Damping factor: 100
Slew rate: 50 volts/microsecond
Rise time: 1.7 microseconds
Hum & noise: Less than 40 microvolts RMS (117dB below rated output IHF A-weighted)
Power supply energy storage: 154,000 uF total
Power requirements: 105-125VAC 60Hz (210-250VAC 50Hz) 640 watts at rated output (100WPC 8 ohms), 800 watts at 150WPC 4 ohms, 800 watts maximum, 105 watts idle
Other: Input polarity: Non-inverting at unbalanced inputs. Balanced pin 2+ (IEC-268)
Dimensions: 19" (48 cm) W (standard rack panel) x 51/4" (13.3 cm) H x 127/8" (32.7 cm) D. Handles extend 11/2" (3.8 cm) forward of the 3/8" thick front panel. Output connectors extend 1" behind rear panel
Weight: 37.2 lbs. (16.9 kg) Net; 48.7 lbs. (22.1 kg) Shipping.

Buyer to pay all shipping and insurance cost. Please call 734-662-3595 and ask for Larry or Richard for any further information on this product. Michigan residents pay 6% sales tax. Ohio residents pay 6.75% sales tax. Illinois residents pay 6.25% sales tax + local municipalities if applicable. PayPal Users pay 3.5% fee. All major credit cards are charged an additional 2% transaction fee. American Express users pay 3% additional. Please check on the availability of item as we are also a retail outlet and some items are sold prior to us being able to update the listing. All electronics support US voltages only unless indicated otherwise. We do not change voltages.

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