Questions? Call Us:

Summit Audio EQF100
Tube EQ, Parametric


Summit Audio's EQF100 is a Full Range Passive Tube Equalizer. Smooth and Precise Rich, smooth tone and an openness are just the beginning.
Learn More
Our Price: $3,499.99
List Price: $3,899.99
You save 10%!
Be the first to review.

Full Compass offers free ground shipping on thousands of stock and non-stock (special order) items for orders placed on this web site and shipping in the continental US (48 states).

Learn More

Free Shipping


We guarantee to match pricing on the products we sell for new, identical and immediately available products if you see them offered at a lower price. Please contact us if you find a lower price before purchasing.

Learn More

Low Price


Summit Audio EQF100
Usually ships in 7-14 business days.
Need it sooner? Call us!

Similar Products

Summit Audio's EQF100 is a Full Range Passive Tube Equalizer.

Smooth and Precise

Rich, smooth tone and an openness are just the beginning. Experience how an EQ of this caliber will breathe life into your sound. The EQF-100 is a no compromise solution for precision tone shaping.

Four Bands Plus

The EQF-100 provides 4 bands of fully parametric equalization and an additional 3 position high and low pass filter for added flexibility. Each band features a seven position fixed frequency selector that works in conjunction with the bandwidth know to allow you to tune the slope of the EQ curve.

Under the Hood

The EQF-100 represents the pinnacle of quality passive EQ design. Finer details include individually hand-tune frequencies and a transformerless tube/solid-state hybrid signal path. Only custom wound inductors and hand-tuned capacitors are used to filter the signal because active elements can create phase anomalies.

Hand-crafted in the USA

Each piece of Summit gear is meticulously crafted by hand in Summit's 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.


Size and Weight

  • Height: 3.5"
  • Width: 19"
  • Depth: 10"
  • Weight: 17lbs

Power Configuration

  • Internal AC Supply, 35W, 115V or 230V, 50Hz or 60Hz (switchable)
  • Fuse: 0.5A for 115VAC and 100VSC, 0.25A for 230VAC

Selectable Frequencies

  • Band 1 Frequencies: 33 Hz, 56 Hz, 100 Hz, 180 Hz, 220 Hz,270 Hz, 390 Hz
  • Band 2 Frequencies: # 250 Hz, 330 Hz, 470 Hz, 560 Hz, 680 Hz,820 Hz, # 1.2 kHz
  • Band 3 Frequencies: 1 kHz, 1.5 kHz, 1.8 kHz, 2.2 kHz, 2.7 kHz,3.9 kHz, 5.6 kHz
  • Band 4 Frequencies: # 3.3 kHz, 4.7 kHz, 6.8 kHz, 8.2 kHz, 10 kHz,12.5 kHz, # 15 kHz


  • High Filter: 8.2kHz, 12kHz, 18kHz
  • Low Filter: 22Hz, 47Hz, 82Hz


  • Input: +4dB female XLR
  • Output: +4dB male XLR

Max Level

  • Max Input Level (XLR): +25dB
  • Max Output Level (XLR): +25dB
  • Max Gain: 18dB 1 frequency, 25dB two overlapping frequencies

Operating Measurements

  • Frequency Response: 12Hz - 50kHz flat, 12Hz - 100kHz, 1.5dB
  • Signal to Noise Ratio: Tube: 127dB average 20Hz - 20kHz
  • THD+ Noise: Tube: 0.026% @ 1kHz, 0dBu
  • Vacuum Tubes: 3 12AX7A


  • 3-year manufacturer's limited warranty 

Click to download

To be the first to review this item, click here.

Add to Cart

We're sorry, only of this item available

Call a Sales Pro at 800-356-5844 for more information

© 2017 Full Compass Systems, LTD  9770 Silicon Prairie Parkway, Madison, WI 53593  All rights reserved.

We are not responsible for typographical errors in pricing or product specification
inaccuracies in our catalog or web site. Prices are subject to change without notice.