The 2110 is Boulder’s most iconic offering. It is instantly recognizable, our highest performing, continuously-produced preamplifier. Inside there are countless technological advancements and precision electronic design. Outside, the modern and luxurious look is highlighted by a wrap-around mirror-glass display window and hand-polished stainless steel controls. Extensive connection and programming features make the 2110 the obvious choice as the heart of any world-class audio system.


  • Balanced version of Boulder's analog discrete step volume control is programmable for 0.1, 0.5, and 1.0 dB steps

  • Four separate chassis: left audio, right audio, user interface, and power supply to isolate the analog channels from supply, control, and display noise

  • Large, easy-to-read, dot matrix LED display

  • Six pairs of programmable, differentially-balanced inputs

  • Three pairs of balanced outputs for bi- and tri-amplified systems or powered subwoofers

  • Cut mirror glass display window to match the hand-polished stainless steel buttons and volume control

  • Separate power supply chassis houses three independent power supplies: analog left, analog right and control functions

  • Every input can be custom named and configured for user preferences

  • Auxiliary outputs are programmable to feed secondary systems or recording devices

  • Uses 12 high-current output 993S gain stages, a discrete and modern version of the 990 gain stage used in broadcast and recording studios world-wide

  • Boulder Link and 12V trigger for use with external control systems

  • Each input can be configured for Theater Mode when used in home cinema installations


  • Balanced Inputs

    6 pairs of 3-pin XLR

  • Main Balanced Outputs

    3 pairs of 3-pin XLR

  • AUX Balanced Outputs

    1 pair of 3-pin XLR

  • Maximum Input Level

    7 Vrms

  • Maximum Output Level

    28 Vrms

  • THD+N, 2V Output

    from 20 Hz to 5kHz: 0.0008% (-102 dB)
    at 20 kHz: 0.001% (-100 dB)

  • Maximum Voltage Gain

    20 dB

  • Volume Range

    100 dB

  • Volume Steps

    0.1, 0.5, 1.0 dB ± 0.01 dB

  • Aux Path Gain

    -1 dB

  • Frequency Response, 20 Hz to 5 kHz

    +0.00, -0.03 dB

  • Frequency Response, -3 dB

    0.02 Hz & 300 kHz

  • Crosstalk, L to R or R to L

    -134 dB or better, 20 Hz to 20 kHz

  • Crosstalk, Adjacent Inputs

    -134 dB or better, 20 Hz to 20 kHz

  • Crosstalk, Main to AUX

    -130 dB or better, 20 Hz to 20 kHz

  • Input Impedance

    333kΩ Balanced

  • Output Impedance

    100Ω Balanced

  • Power Requirements

    90-120V / 200-240V, 50 - 60 Hz

  • Power Consumption

    240W Max, 85W On (Idle), 500mW Standby

  • Preamplifier Weight

    63 lbs. (28.6 kg),
    Shipping: 77 lbs. (34.9 kg)

  • Power Supply Weight

    48 lbs. (21.8 kg),
    Shipping: 58.5 lbs. (26.5 kg)