Symetrix SX204, 4-channel Stereo Headphone Amplifier

Description

Working unit, will have some minor scuffs and scratches once pulled from the rack, that do not affect its functions.
Will take better photos once I pull apart my rig for now you can see it in the second row to the left
THE MODEL SX204 HEADPHONE AMPLIFIER is a 1-in 4-out amplifier designed to drive multiple headphones of any impedance. Symetrix’ proprietary high voltage converter technology gives the SX204 the ability to drive high impedance headphones with the equivalent output voltage of a much larger power amplifier, yet provides more than ample current for low impedance phones. The four stereo outputs automatically adjust output power to accommodate different load impedances. Each of the four outputs has its own set of amplifiers, each with its own output control. Independent amplifiers allow mixing and matching totally different headphone types. Controls provided are input level, output level for each individual amplifier, and a stereo/mono switch. The Stereo/Mono switch allows the amplifier to be used several ways. As a “normal” stereo amplifier (with four outputs), the left and right inputs are used for stereo signals, which feed the left and right outputs. Switching to mono with a stereo input provides a quick check of the mono compatibility of a stereo mix. As a mono amplifier, one signal fed to either input will feed both outputs. Also in mono mode, when two different mono signals are fed to the left and right inputs, they will be combined to feed both the left and right outputs. The inputs are electronically balanced, but will operate normally in an unbalanced configuration when 2-conductor ¼" plugs are inserted. The outputs are ¼" stereo connectors. Since the SX204 has a halfrack width chassis, two such units may be mounted in a single 1.75" rack space, giving eight individually controlled stereo headphone outputs. •