Comp-3A Jr
Best optical compressor for home studio enthusiasts seeking vintage sound.
Discover vintage-inspired audio warmth with this single-channel compressor and leveler. Its signal path is built entirely with discrete components, offering a distinct character often sought after in classic gear. Transformer-balanced inputs and outputs ensure a rich, full sound. The optocoupler gain control provides unique compression qualities, while the simple two-knob interface and a three-position TIME switch allow for intuitive sound shaping. This unit brings sought-after vintage tones to your studio at an accessible price point, featuring a compact design and stereo linking capability for modern flexibility.
$349.00
Owner Satisfaction
4.5
/ 5
Category Rank
241
/ 354
#241 in Noise Gates & Compressors
Price vs Category Average
-72%
Below average
Type
Compressor / Leveler
/ Compressor / Leveler
Who it's for
- Musicians and engineers seeking vintage optical compression character.
- Home studio owners and budget-conscious producers.
- Beginners and those prioritizing quick, effective sound shaping.
Who should skip it
- Experienced engineers desiring granular control over compression.
- Producers needing stereo bus compression or dual-mono processing.
- Studio users prioritizing integrated power and tidy cable management.
Performance breakdown
Vintage Character
Discrete components deliver the authentic warmth of classic studio hardware.
Ease of Use
Two-knob interface makes dialing in professional compression incredibly intuitive.
Build Quality
Transformer-balanced circuitry provides a robust, professional-grade signal path.
Form Factor
Quarter-rack design fits perfectly into any space-constrained home studio setup.
Compression Versatility
Three-position switch offers essential shaping but lacks deep parameter control.
Stereo Flexibility
Linkable functionality allows for seamless stereo operation with a second unit.
Key Specs
Type
Compressor / Leveler
Channels
1
Circuit Type
Discrete components, Optical
Input/Output
Transformer balanced
Connectors
XLR and TRS input/output, Link jack
Attack Time
~1 ms (fastest)
Controls
Gain Makeup, Gain Reduction, TIME switch (3-position)
Bypass Type
True Bypass, Hardwire
Know before you buy
This unit uses an optocoupler-based circuit, which is famous for its smooth, musical, and program-dependent compression. It excels at leveling out vocals and bass guitar without sounding overly aggressive or clinical.
Yes. The Comp-3A Jr features a link jack on the back, allowing you to connect two units together to maintain a stable stereo image when compressing stereo sources.
The TIME switch adjusts the attack and release characteristics of the compressor. It provides three preset modes, allowing you to quickly toggle between faster and slower response times to suit different instruments or vocal styles.
No, the unit features a true hardwire bypass. When the bypass is engaged, your signal passes through the unit without being affected by the internal circuitry.
The Comp-3A Jr uses a compact quarter-rack format. While it is designed to save space on your desktop, you will need a compatible rack-mount tray or shelf if you intend to integrate it into a standard 19-inch studio rack.
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