Ultrasonic 9 Tube Damping Instrument (Pair) **Overstock!**

Small tubes are especially sensitive to vibration, Herbies Ultrasonic 9 damper rings greatly reduce resonance, improving all aspects of performance! Featuring extra-soft and extra-beefy isolation pads, these slim rings slide over your tubes for instant sonic benefit! They improve imaging, and resolution as well as delivering much better overall transparency and a larger soundstage. They'll even help with improving transient "snap" and delivering wider dynamic range.

Compatible with miniature 9-Pin tubes and all tubes 3/4" to 7/8" diameter (19mm to 22mm), we've highlighted the most popular in the list below:

Fits miniature 9-pin  tubes and all tubes , including 10GV8, 12AT7/ECC81, 12AU7/ECC82, 12AX7/ECC83, 12AY7, 12AZ7, 12B4, 12BH7, 12BY7,12BZ7, 12FQ7, 2C51/396, 417, 5670, 5687, 5751, 5814, 5842, 5879, 5963, 6189, 6201, 6267, 6350, 6414, 6688, 6829, 6840, 6900, 6922, 6955, 6973, 6AN8, 6BL8, 6BM8/ECL82, 6BQ5/EL84, 6BQ7, 6BW4, 6CA4, 6C45, 6CG7, 6CS7, 6DE7, 6DJ8/ECC88, 6FQ7, 6GC7, 6GH8(A), 6H30, 6GU7, 6N1P, 6N3P, 6N6(P), 6P1T, 6U8(A), 6V4, 7025, 7044, 7062, 7119/E182CC, 7189, 7199, 7308, 7788, 8416, EC86, ECC189, ECC81, ECC82, ECC83, ECC85, ECC86, ECC99, EF86, EL84, EL86, EZ80, EZ81, PCL82, PCL86, SV83.

Pro-Tip: Since every tube design is a little bit different, some tubes may prefer these rings to be placed higher on the glass, others may prefer in the middle or lower part. Experimentation is key to achieving the best sound!