Designed by John Curl - creator of the legendary Vendetta Research phono preamp  Inputs and outputs use Vampire brand 24k gold-plated RCA jacks  Balanced outputs use Neutrik brand premium XLR jacks  MM 47 k ohm, MC 100 ohm or MC 47 k ohm; (MC 47 k ohm is ideal for high-end Grado moving iron cartridges)  S/N 86 dB MM; 75 dB MC  RIAA accurate within 0.2 dB  Exclusively Vishay-Dale resistors in the audio path  Triple shielding; low-carbon mild steel partitions isolate the power supplies & AC wires  Dual mono design; each audio channel is separately enclosed in its own extruded aluminum enclosure  Separate high speed-soft recovery rectifiers, filter caps and voltage regulators for each channel  Superior R-core type power transformer  Mono switch can improve sound of mono and older LPs  Built-in AC line conditioner to prevent AC noise from polluting the circuits  AC polarity reverse switch can reduce hum in many systems  Non-magnetic aluminum rear panel for purest sound  Turn On Options switch: manual or auto with 12v trigger input  Premium detachable heavy gauge IEC AC cord  2 6’ (3m) trigger wires included  2u Chassis, rack mountable with HRA2 (sold separately)  Parasound 5 year parts, 5 years labor warranty    (For USA and Canada purchases only)