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LR Baggs A-REF 200Watt 2-Channel Acoustic Amplifier

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The A-REF 200Watt 2-Channel Acoustic Amplifier, a product of three years’ intensive development, blends cutting edge loudspeaker design, analog and digital circuit technology and industrial design t... Click To Read More About This Product

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The A-REF 200Watt 2-Channel Acoustic Amplifier, a product of three years’ intensive development, blends cutting edge loudspeaker design, analog and digital circuit technology and industrial design to redefine the way that acoustic guitar and vocals should be amplified.

At the heart of the amplifier is a patented Balanced Mode Radiator. The BMR is a new type of loudspeaker that has its world debut in the Acoustic Reference Amplifier. It creates and radiates sound in a fundamentally different and better way. This groundbreaking innovation is the brainchild of the eminent speaker designer Dr. Graham Bank and was specifically adapted for acoustic guitar in collaboration with our engineers.

Exclusive to LR Baggs, this fully custom flat 8” honeycomb-diaphragm speaker employs a single 2” voice coil to generate a 140 degree wide full range conical sound field with a clean SPL of 108 dB. As all frequencies are generated by the one flat diaphragm, there are no crossovers or time distortions to smear and muddy the sound. Harmonics align naturally with fundamentals, so clarity and detail are breathtaking but without the normal harshness or annoying directionality of a multi-driver system.

Wrap all this technology up in a beautiful and durable lightweight enclosure with natural wood sides and an innovative handle and you’ve got a true tour de force and object of desire.

Balanced Mode Radiator – super wide full frequency coverage eliminates the “sweet spot” and fills every corner of the room for the same rich listening experience for everyone.

Conventional Loudspeaker – high frequency coverage is very limited and “beamy,” requiring listener to be in the “sweet spot” for the full experience.


  • 8” flat honeycomb-diaphragm speaker
  • Two studio quality all discrete preamps
  • 200W Digital hi-fi amplifier
  • Separate VU meters for optimizing gain on each channel
  • 4-Band EQ with tunable low-mid and high-mid bands
  • Garrett Null notch filter to easily manage feedback
  • 1/4" and XLR combo jack inputs for channels 1 and 2
  • Aux input with 1/4” and RCA parallel inputs for third channel
  • DI output with ground lift for defeating ground loop buzz
  • Modified spring reverb for rich warm sound
  • FX loops for channels 1 and 2
  • 1/4” INPUT
  • Input Impedance: 10 megohms
  • Preamp Gain - ∞ to + 40dB
  • Input Level - 40dBv to +20dBv (.01Vrms to 3.53Vrms)
  • Input Impedance 6.8K ohms (Each leg of balanced)
  • Preamp Gain - ∞ to + 50dB
  • Input Level -50dBv to +12dBv (.003Vrms to 4.2Vrms)
  • Input Impedance (1/4” mono) 6.6K ohms
  • Input Impedance (1/4” stereo) 20K ohms
  • Input Impedance RCA 20K ohms (each side)
  • Input Level -10dBv to +17dB (.3Vrms to 7Vrms)
  • EQ
  • Notch - 21 dB, sweepable from 60Hz to 320Hz
  • (The notch is bypassed when clicked to the “off ” position - full CCW)
  • Bass +/- 12dB @ 100 Hz
  • L o Mid +/- 12dB @ 500Hz, sweepable from 200Hz to 1kHz
  • Hi Mid +/- 12dB @ 2kHz, sweepable from 1kHz to 5kHz
  • Treble +/- 12dB @ 10kHz
  • Send Level -5dBv (0.5Vrms)
  • Output Impedance 600 ohms
  • Return Level +6dBv (2Vrms) Maximum before clipping
  • Input Impedance 20K ohms
  • D.I. OUT
  • Output level -8dBv (0.4Vrms) Balanced
  • utput impedance 600 ohms
  • Output level -10dBv (0.3Vrms)
  • Output impedance 600 ohms
  • Output level -10dBv (0.3Vrms)
  • Output impedance 600 ohms
  • OUTPUT SPL MA X 108dB at 1 meter (full range)
  • AC Power Consumption 220W Max
  • AC Current Draw 230V = 1A, 110V = 2A Max
  • Voltage Range (115V Setting) 90V - 130V, 50Hz - 65Hz
  • Voltage Range (230V Setting) 190V - 260V, 45Hz - 60Hz
  • 28 lbs, 17.50” Width x 12.25” Depth x 18.0” Height
Pro Coverage
Manufacturer's Warranty
One year parts and labor warranty. (Self-installation voids warranty.)

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