The Adcom GFA555 amplifier is a classic 2 channel transistor amplifier from the Adcom 555 series that boasts superior clarity compared to other transistor amps. This Adcom 555 presents only 0.09% THD when driving up to 200 W across 20 Hz-20 kHz into an 8 ohm loudspeaker. Even with a bridged mode power of 600W, this Adcom amplifier only encounters 0.25% THD. Another excellent feature of the Adcom GFA555 amplifier is its 106 dB noise specification. This GFA-555 Adcom amplifier sports a simple, but sturdy chassis with pilot lights and a warning light for >1% THDs. The Adcom 555 can be rack mounted if required with an optional mounting kit.