Cayin HA-3A Amplifier 125dB dynamic range and vanishingly

125dB dynamic range and vanishingly low distortion

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The M21 uses four CS43198 DACs in a fully differential configuration feeding a two stage amplifier built from OPA1692 voltage amps and SGM8262 current buffers

Cayin HA-3A Amplifier 125dB dynamic range and vanishinglyThe Cayin HA 3A is a compact transformer coupled, balanced driven vacuum tube headphone amplifier, the fourth and final piece of Cayin's transformer coupled tube amplifier lineup, bridging the gap between the HA 1A MK2 and the HA 6A. Built with the same design principles and hand wiring standards as the HA 6A and HA 300 MK3, the HA 3A packages genuine transformer coupled tube amplification into a desktop form factor roughly the size of a sheet of A4