Testseek.com have collected 1 expert reviews of the 633 Engineering Onyx Plus Valve Guitar Amplifier and the average rating is 0%. Scroll down and see all reviews for 633 Engineering Onyx Plus Valve Guitar Amplifier.
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Published: 2015-10-01, Author: Bob , review by: soundonsound.com
For me, 633 Engineering's Onyx+ is one of the finest amplifiers that I've had the pleasure of playing through. Although it hadn't been set up specifically for me, it came as close as I've yet found to being my perfect live amp. A bit of adjustment here an...
