Summit Audio 2BA-221 Single Channel Tube Microphone/Line Preamplifier


Have a Question? Call Toll Free: 888-462-7828

Live Chat Email Us
Dale #:SUMM-2BA221

Availability: Usually ships in 5 - 10 Days

This item usually ships within 5-10 days after your order is placed. Your payment will be charged after completing checkout.
Free Shipping (Continental US)
  • The proper amount of voltage to a tube and solid-state circuit can make all the difference in the quality of the sound. The 2BA-221 is made with the highest quality full-voltage tube and solid-state signal paths and the best components available. The 2BA-221 even has a separate, dedicated power source for its 48V phantom power, and does not draw current away from the main circuits.


    • Variable microphone impedance
    • High quality mic preamp with polarity, pad and level control
    • Channel insert
    • Highpass filter
    • 1 balanced input, 1 mic input, 1 instrument input
    • Balanced outputs
    • Hand Crafted in the U.S.A.

    Integrating the 2BA-221 into your studio or live rig is easy given the comprehensive selection of input and output options provided. Summit Audio designed the connections of the 2BA-221 with creative options in mind.

    Another really cool feature is its variable tube output control, which provides access to a huge variety of tones, from clean solid state to rich harmonics and all sorts of variations in between. What a benefit to have one preamp and still have the advantages of many different sounds! The 2BA-221’s single 12AX7A Tube provides rich, warm tone and is easy to find and replace.

    The Summit Audio design philosophy considers the entire package when it comes to crafting gear. Special attention was paid to the details of construction and it included many refinements over the years so units are durable enough to handle the rigors of the road. That is one of the reasons why you will find Summit gear on tour with many of today’s top touring acts around the world.

    Each piece of Summit gear is meticulously crafted by hand in our shop using only the best quality components and attention to detail. Quality components and engineering know-how are the critical element to the sound and longevity of audio gear.

  • Dimensions Height:
    1.75 inches (4.44 cm)
    8.5 inches (21.59 cm)
    7.42 inches (21.59 cm)
    Weight 7 pounds (3.15 kg)
    Power Configuration Internal AC Supply
    20 watts, 115, 50 or 60 Hz (USA model)
    Fuse size .5 amp, slo-blo for 100/115 V
    Fuse size .25 amp, slo-blo at 230 V
    Input Impedendance Mic: 1.5K ohms
    Hi-Z: 10K-1.75M ohms
    Output impedance (XLR) 150 ohms
    Connections Mic Input: +4 dB female XLR
    Line Input: -10 dB 1/4" balanced
    Outputs: +4 dB male XLR and 1/4" -10 dB balanced
    Stacking Input/Output: -10 dB balanced
    Max input level Mic: -16dBu
    Line: 22dBu
    Hi-Z: 15dBu
    Operating Measurements Max output level (XLR): 25dBu
    Max gain: 75dB
    Equivalent input noise: -135dB average 10Hz-20kHz
    Frequency response: 10Hz- 50kHz (-1dB)
    Signal to noise ratio: 115dB average 10Hz- 20kHz
    THD + Noise: 0.055%, -32dB in +4dB out, 1 kHz
    Vacuum tubes 12AX7A
    Warranty 3 year limited warranty
  • Shipping rates calculator