B&K Precision 4040 20 MHz Sweep/Function Generator — Synth Resale Value
Keyboards and SynthsWhat a used B&K Precision 4040 20 MHz Sweep/Function Generator sells for on Reverb (median of 2 recent listings).
B&K Precision 4040 20 MHz Sweep/Function Generator value — Used $95. Prices updated July 2026.
Used
$95
New / Sealed
—
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Item details
- Brand
- B&K Precision
- Make
- B&K Precision
- Model
- 4040 20 MHz Sweep/Function Generator
- Year
- 1995
- Finishes seen
- Beige
- Used range
- $95 – $95
- Sample size
- 2 listings
B&K Precision 4040 20 MHz Sweep/Function Generator resale value
The used B&K Precision 4040 20 MHz Sweep/Function Generator has a median Reverb asking price of $95, ranging from $95 to $95 across 2 current listings.
What drives the price
For a used synth, vintage analog vs digital, working keys/sliders, polyphony, and original PSU move the price most. Vintage and limited runs command a premium; player-grade and modified examples sell for less.
Price guide
What this actually trades for — sold values by condition vs. what sellers are asking today
| Condition | Value | Based on |
|---|---|---|
| Used | $95 | eBay sold comps |
Frequently asked questions
- What is the current resale value range for this B&K Precision unit?
- The used range for the B&K Precision 4040 is currently listed between $95 and $95.
- Is this generator still considered a desirable piece for synth enthusiasts?
- As a 1995 model, this function generator is a valuable piece of test equipment for keyboard and synth maintenance.
- What color finishes are available for the B&K 4040?
- The finishes seen for this model include Beige.
