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BAT REX II Stereo Power Amplifier

Balanced Audio Technology REX II Stereo Power Amplifier the Ultimate Statement in Technology and Sound: All-Triode Design Drives Any Speaker Load, Has No Tubes to Bias or Fuses to Replace

Experience Everything from Plug-and-Play Simplicity to the Palpable Illusion of Recreating the Original Musical Events in Your Home: All Hail the King, the BAT REX II Stereo Power Amplifier

The BAT REX II power amplifier epitomizes the true definition of “balanced.” Balanced in terms of circuit topology and balanced in absolute sonic terms. One listening experience with this majestic all-triode amplifier both explains and justifies the pursuit of audio perfection, a long journey for you and BAT. From the plug-and-play simplicity provided by auto-biasing to the palpable illusion of recreating the original music event in your home, REX II combines high-power output, beautiful midrange texture, and stupendous execution. 80Wpc in stereo or 160Wpc in mono form, it drives any loudspeaker load. No tubes to bias. No fuses to replace. Cutting-edge tube sound doesn’t come easier. All hail the king.

Plug-and-Play Simplicity in a No-Compromise Design
The all-triode REX II power amplifier represents a technological tour de force of modern engineering applied to vacuum-tube power-amplifier design.  From the plug-and-play simplicity provided by its auto-biasing and electronic protection circuits, to the palpable illusion of recreating the original musical event in your home, the REX II combines high-power output, beautiful midrange texture, and great extension at the frequency extremes. Delivering a robust 80 watts per channel in the stereo version or a compelling 160 watts per channel as a monoblock—and fully symmetrical from beginning to end—it is a design without compromise.

A Truly Different Approach

Think of REX II as two single-ended amplifiers per channel, with their waveforms summed at the output transformer. No direct current flows through the latter, allowing the output transformer to be a truly wide-bandwidth design while reducing low-frequency distortion. REX II extends the benefits of vacuum-tube current sources to include both the first and second gain stages of the circuit design. Hence, the linearity of the gain stage improves, the adjustments for the first and second gain stages become independent, and the tube current source components operate at a lower stress level. You can also fine-tune the sound to best meet your individual needs.

Intelligent Auto Bias and Electronic Protection

The REX II’s advanced design eliminates the constant need to set and readjust the proper bias of the output tubes. An intelligent automatic bias circuit adjusts for changing line voltage and aging tubes. For convenience, LED indicators show the status of each individual output tube. BAT further extends the plug-and-play nature with a novel “fuse-less” protection circuit, which eliminates the power-supply rail fuses to provide both a more refined sonic performance and user-friendly experience. All you have to do in the event of an output tube being over-stressed is to flip the power switch. No tubes to bias.  No tube fuses to replace. It doesn’t get any easier!

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Output per channel at 8Ω/4Ω: 80W / 80W
Conversion to Mono: Factory or Wire Kit
Output in Mono Configuration 8Ω/4Ω: 160W / 160W
Frequency Response: 5Hz to 200kHz
THD at full power: 3.0%
Input Impedance - stereo version: 215 kΩ
Input Impedance - mono version: 108 kΩ
Gain (Nominal into 8Ω): 26dB
Tube Complement 4x6H30, 6x6SN7, 2x6V6, 4x6C33C-B
Number of Power Cords: 1
Remote Control: No
Power Consumption (Idle/Full Power): 500W/1000W
Dimensions (WHD): 17" x 24" x 9"
Weight: 100 lbs.

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User Manual (PDF, 215 KB)

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