

🎸 Elevate your bass tone with vintage vibe and modern control — don’t just play, own the groove!
The Ampeg Opto Comp Bass Compressor Pedal is an analog optical compressor designed to deliver smooth, vintage-style compression with precise control over dynamics. Featuring Compression, Release, and Output controls, it enhances sustain and tonal clarity while maintaining pure signal integrity through true bypass. Powered by 9V DC or battery, this compact pedal is a reliable, gig-ready tool for bassists seeking professional-grade compression with classic warmth.






| ASIN | B07GZ4KR8R |
| Amperage | 50 Milliamps |
| Audio Output Effects | Compression |
| Best Sellers Rank | #98,970 in Musical Instruments ( See Top 100 in Musical Instruments ) #101 in Electric Guitar Compression Effects #26,334 in Guitar & Bass Accessories |
| Brand Name | Ampeg |
| Color | White |
| Customer Reviews | 4.1 4.1 out of 5 stars (73) |
| Global Trade Identification Number | 00614252309257 |
| Hardware Interface | 1/4-inch Audio |
| Item Dimensions | 2.6 x 4.5 x 2.2 inches |
| Item Type Name | Bass Compression Effect Pedal |
| Item Weight | 907 Grams |
| Manufacturer | Ampeg |
| Manufacturer Part Number | 99-040-4011 |
| Model Name | OPTO COMP |
| Model Number | OPTO COMP |
| Signal Format | Analog |
| Style | Bass,Compressor |
| UPC | 614252309257 |
| Unit Count | 1.0 Count |
| Voltage | 9 Volts |
| Warranty Description | 1 year. |
A**R
Best compressor for the money!
Why did you pick this product vs others?: I love Ampeg gear and this pedal did not disappoint! It really wakes up the tone on my PJ Bass with passive Geezer Butler EMG pickups. It’s the first pedal in my signal chain.
L**Y
Perfect simplicity
I wanted a simple easy to use compressor. Not a "flat top" limiter, but a dynamic compressor. This opto compressor uses a simple approach to compression that softly rides the gain, filling out the bass tonality. As an avid bass player and 50 year commercial audio professional, the simplicity of this compressor and the quality of the audio, sans artifacts, has made this my go to gig compressor.
G**M
good
Suttle compression. Lights let you know if you have a signal and how much you have. very smooth but the high end from the tone is slightly noisy, not a hum but a hiss. otherwise a good unit.
C**P
Edit added after having for sometime..
It is not an effects pedal. If it is doing it's job, you shouldn't hear it doing anything. That's exactly what I wanted and that's what I got. You can't tell it's on, but everything is now evened out very nicely. Not sure yet if I am getting any added sustain, but I need to work it it more to verify if so or if not. Even so, my sound is much more even now and that's what I really was looking for. Really easy to use compared to others I have had. About 10 seconds and it was good to go. Great job Ampeg! I also have their Classic preamp pedal which is awesome. Great together! EDIT: Having had this for sometime now I have changed from 5 stars to 3 at best. The problem is I have a jazz bass with passive pups and they are not hot enough to drive this pedal. The sensitivity is really weak. I put my Ampeg Classic Preamp before it which made it work fine, but the preamp had to have the volume up really high which made the noise floor unacceptable. The Ampeg Classic has great tone, but terrible noise if up very loud using a cabinet with a horn/tweeter. I may put this on my 6 sting electric and get something else for the bass. It would likely be fine with active or hotter pups.
J**I
Great budget compression bass pedal.
For the money a great compression bass pedal. I would recommend this if more a budget rig.
R**.
Great Smooth Compression
I've been playing bass for nearly 40 years. I've tried other compressors (I own two other), and this is first one that works for me. For the price, you cannot beat it. Now I get it. Wasn't about to spend $300+ for something that might end up on the shelf with the others. I'm thinking optical is the way to go for bass. It's noticeable, adds a tad of mids. Super easy to use. Works with a 1-Spot AC adaptor.
D**L
Great gain adjustment
If you are looking for a soft compresor, this pedal is a good option, tone doesn't change, noiseless and good gain adjustment
T**D
Quality at a reasonable price
Ampeg is renown for their bass sound and I picked this pedal after lots of research. It was packaged well and shipped promptly. It made an immediate impact on my tone and was exactly what I needed.
C**A
Works well. No squashed sound, just evens off some of the louder bits of your signal the way a compressor should. Given the fact you can pay a lot more for something that won't be as subtle and natural sounding, I consider it good value for the price paid.
R**N
Buen Producto fasil de usar!
沖**美
効果抜群
D**T
Awesome bass pedal! Great bang for buck!
P**T
Pour moi il rempli pleinement ca fonctions. Je suis satisfait pour le prix
TrustPilot
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