Reference 6SE Line-Stage Preamplifier Discover why Audio Research enjoys a long tradition of producing the finest preamplifiers in the world. In 1973, the SP3 was hailed by every major critic as the best preamplifier available, and this pursuit has continued ever since. The Reference Series from Audio Research was first introduced in 1995 and has been the ultimate expression of performance, musicality and dynamics. Reference preamps have awakened countless listeners to the irreplaceable contribution of a great preamp to a system’s final performance. The Reference 6SE is the latest chapter in our story. The Reference 6SE delivers the highest performance ever available in a single-chassis preamplifier. Benefitting from research that went into the Reference 160-series amplifiers, and the Reference 750SEL amplifier, the 6SE incorporates a myriad of new components that have been judiciously incorporated into its design. With a single gain stage, the 6SE is a fully-balanced, Class-A design with zero feedback. In addition to six long-life 6H30 tubes in the gain stage, the enormous and highly-regulated power supply has another 6H30 with a 6550, typically found as an output tube in a power amplifier, providing vacuum-tube regulation. The 6SE stands on the shoulders of prior Reference preamplifiers and the latest ARC power amplifiers from which innovations were taken. As such, it forms the foundational circuit for other preamplification products such as the Reference Phono 3SE. Regardless of the recording, in stepping up into a Reference preamplifier, the sonic gains are immediate and compelling. Effortless, dynamic, and dimensional. The speed and resolution merge with musical color and textures that are both accurate and captivating. Low bass extension and heft from the 6SE reveal just how much bottom end reach is left to be desired in lesser designs. New 6SE owners revel in the potential that can now be tapped in their existing power amplifier’s and loudspeaker’s performance. Hear for yourself why so many listeners consider the Reference 6SE to be the indispensable core of a world-class performance audio system. TECHNICAL SPECIFICATIONS Frequency Response +0-3dB, 0.4Hz to 200kHz at rated output (Balanced, 200k ohms load) Distortion Less than .01% at 2V RMS BAL output Gain Main output: 12dB Balanced output, 6dB SE output Record out: 0dB (Processor input: 0dB BAL output) Input Impedance 120K ohms Balanced, 60K ohms SE Inputs: 4 balanced, 4 single-ended Assignable processor passthrough Output Impedance 600 ohms Balanced, 300 ohms SE Main (2) 20K ohms minimum load and 2000pF maximum capacitance. Outputs (3): 2 main, 1 record out (XLR and RCA connectors). Output Polarity Non-inverting Maximum Input 18V RMS BAL, 9V RMS SE Rated Outputs 2V RMS (1V RMS SE) into 200K ohm balanced load (maximum balanced output capability is 70V RMS at less than 0.5% THD at 1kHz) Crosstalk -88dB or better at 1kHz and 10 kHz Controls Rotary encoders: Volume (103 steps), Select Input. Push Buttons: Power, Menu, Enter, Mono, Invert, Mute Power Supplies Electronically regulated low and high voltage supplies. Automatic 45 sec. warm-up/ brown-out mute. Line regulation better than .01%. Noise 1.7uV RMS residual IHF weighted balanced equivalent input noise with volume at 1 (109dB below 2V RMS output.) Tube Complement (6)-6H30P dual triodes, plus (1 each) 6550WE and 6H30P in power supply Power Requirements 100-135VAC 60Hz (200-250VAC 50/60Hz) 130 watts. Standby: 2 watts. Dimensions Width: 19” (48 cm) Height: 7.8” (19.8 cm) Depth: 16.5” (41.9 cm) Handles extend 1.6” (4 cm) forward of the front panel. Weight: 37.5 lbs. (17 kg) Net; 49 lbs. (22.3 kg) Shipping
