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The Reference mono-block voltage: 230v but we also provide the mono block power purify converter to supply users in North America: Input: 115v 60Hz Output: 230v 50Hz 800VA / each, can greatly improve the sound quality + $ 400.

Description
Ultra-linear mode and with the use of four KT-88 output tubes and two 6SN7 driver tubes per channel, the Reference Tube Amplifier is capable to deliver 160 watts of power without stressing or pushing the tubes to their limit. Biasing for the output tubes can be done using the bias trimmers and measuring
points, all can be easily accessed from the top of the amplifier. The Reference Tube Amplifier uses the latest monoblock circuitry and only highest quality parts and components are used throughout the amplifier circuit. The power and output transformers are custom wound in the USA in order to meet our high standards. The Reference Tube Amplifier is an incredible Class A push-pull monoblock amplifier. Operating under the main chassis of the Reference Tube Amplifier is constructed with the use of 3/8″ thick aluminum panels. Each piece is CNC machined according to our specs, hand polished and then anodized in silver and gold to create the elegant two tone finish. Even the speaker binding posts on the rear of the amplifier are custom made for the best in long-life wear and maximum signal transfer.
SPECIFICATIONS Model: Reference Tube Amplifier
Rated Power Output: 160 Watts RMS Input: XLR, RCA Input Sensitivity: 1V RMS for rated output Input Impedance: 100K Ohms Frequency Response: -0.5 dB from 20 Hz to 20000 kHz -3.0 dB from 8 Hz to 80,000 kHz THD: 1% S/N Ratio: 110 dB Damping Factor: >14 Power Consumption: 300 Watts Output Impedance: 4, 8 Ohm Tube Complement (per monoblock): 4-KT88 2-6SN7 Dimensions (per monoblock): 13.75” W x 20.25” D x 8.5” H Weight (per amplifier): 50 lbs. Voltage 230v 50Hz / 115v 60 Hz + converter provided