crystal clear sound that these amps are known for.Fully tested and works exactly as it should so buy with confidence.Comes as pictured with all the plastic pop out access covers. ![]() Overall in very nice shape.The front and rear channels are rated at 50 watts rms X 4 and are stable down to 2 ohms stereo 4 ohms bridged at 12volts.The sub channel is rated at 240 watts rms and is stable down to a half an ohm in high current mode.Has a built in crossover that is adjustable so you can fine tune your system to your liking. Soundstream 604 Reference Old School Legendary 4 Channel SQ Amplifier Nice Pre-Owned. Speaker over-current protection relays (on the. A fail-safe thermal protection circuit activating at 95OC. The original reference car audio amplifier, unbeaten for SQ, the circuit design and layout is a work of art.The Darlington output devices are configured in pairs to create that distinctive Soundstream tube like sound. PROTECTION CIRCUITS Your REFERENCE405 amplifier is protected against both overheating and short circuits by means of the following circuits: Main power supply fuses (2 at 20 amps each) Smart Power Supply Thermal Rollback activating at 85OC. For sale I have a Soundstream Reference 405S.This is a five channel amp.It is used but in really good condition with only a few marks or scuffs. Soundstream Reference 405 mint condition in original box for sale. Soundstream Reference 405 The original reference car audio amplifier, unbeaten for SQ, the circuit design and layout is a work of art.The Darlington output. This allows the Reference705s to maximize power and efficiency at impedances 1 Ohm in High Power mode, or down to 1/2 Ohm in High Current mode. ![]() Item: 324058804947 Old School Soundstream Reference 405S 5 Channel Amp ! Nice !!!. INSTALLATION STEP 1 HIGH POWER/HIGH CURRENT SWITCH The Reference705s’ subwoofer channel can be switched between High Power and High Current modes. Location: Philadelphia, Pennsylvania, US,
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