Teflon HAL-O: For small-signal tubes

Teflon HAL-O 9 Tube Damper

Reviews

Herbie's original, highly-acclaimed tube damper with lightly sandblasted Teflon C-ring and platinum-cured silicone isolation pads gives a sonically neutral, highly musical result. Reveals low-level cues that give music its real-life atmosphere. Helps to clear up dull or "dark-sounding" systems. For preamp, input/driver, and other cool-running small-signal tubes; also suitable for guitar amplifier preamp tubes. For continuous use up to 420° F (216° C).

"These things really work. The lucidity and focus are really quite phenomenal."-Bob O'Neill, Bound for Sound

Teflon HAL-O 7: Fits 7-pin miniature tubes 5/8" to 3/4" diameter (16 to 19mm), including 0A2, OA2, 0B2, OB2, 1S5, 12FK6, 12FM6, 12X4, 403A/B, 5651, 5654, 6186, 6AN4, 6AK5, 6BH6, 6C4, 6ER5, 6FG5, 6GK5, 6J6, 6N4, 6X4, miniature 6Z4, 7543, EC90, SBA6.

Teflon HAL-O 9: Fits 9-pin miniature tubes, including 12AT7/ECC81, 12AU7/ECC82, 12AX7/ECC83, 12AY7, 12AZ7, 12B4, 12BH7, 12BY7, 12BZ7, 12FQ7, 2C51/396, 417, 5670, 5751, 5814, 5842, 6189, 6201, 6267, 6350, 6414, 6688, 6829, 6922, 6955, 6973, 6AN8, 6BL8, 6BQ7, 6C45, 6CG7, 6CS7, 6DJ8/ECC88, 6FQ7, 6GC7, 6GH8(A), 6GU7, 6N1P, 6N3P, 6N6(P), 6U8(A), 6V4, 7025, 7044, 7119/E182CC, 7199, 7308, 8416, EC86, ECC85, EF86, EL86, EZ80.

Teflon HAL-O 27: Fits small-signal octal tubes approximately 1-1/16" to 1-3/8" diameter (27 to 34mm), including metal 6J5, 6R7, 6SL7, 6SN7, 6SN7GT-series.

Recommended for small-signal tubes only.


90-day no-risk trial. If not satisfied, simply return your Damping Instruments within 90 days for a complete refund.

Lifetime warranty. If anything ever goes wrong, simply return any Damping Instrument to Herbie's Audio Lab and it will be repaired or replaced and returned to you at no cost.