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 the LR Baggs 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. If it all sounds too good to be true, we invite you to head to drop in and take one for a test drive!

1/4” INPUT 
Input Impedance 10 megohms
Preamp Gain - ? to + 40dB
Input Level - 40dBv to +20dBv (.01Vrms to 3.53Vrms)

XLR INPUT
Input Impedance 6.8K ohms (Each leg of balanced)
Preamp Gain - ? to + 50dB
Input Level -50dBv to +12dBv (.003Vrms to 4.2Vrms)

AUX INPUT
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

EFFECTS LOOPS
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
Output impedance 600 ohms

LINE OUT
Output level -10dBv (0.3Vrms)
Output impedance 600 ohms

TUNER OUT
Output level -10dBv (0.3Vrms)
Output impedance 600 ohms
OUTPUT SPL MA X 108dB at 1 meter (full range)

POWER
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

PHYSICAL CHARACTERISTICS 
28 lbs, 17.50” Width x 12.25” Depth x 18.0” Height