Telefunken GE 5654W Replacement Vacuum Tube for CU-29 Copperhead Microphone

Telefunken Phillips Raytheon 5840W Vacuum Tube (AK-47 MkII, ELA M 260)

Telefunken Black Diamond Series 6L6GC-TK Power Amp Vacuum Tube

KOCH 5881 Tube for Power Amplifier, Single

KOCH EL84M Tube for Power Amplifier, Single

KOCH 5881 Tube for Power Amplifier, 2-Pack

KOCH 6V6GT Tube for Power Amplifier, 2-Pack

KOCH EL84M Tube for Power Amplifier, 2-Pack

KOCH 6550 Tube for Power Amplifier, Single

KOCH 5881 Tube for Power Amplifier, Single

Groove Tubes GT-12AT7 Durable Phase Splitter/Driver Tube for Preamplifier

Groove Tubes GT-5Y3 Rectifier/Specialty Tube for Low-power Fender Amplifiers

Groove Tubes GT-12AY7 Preamplifier Tube

Bugera 5AR4 Rectifier Preamp Tube for Guitar Amplifiers

KOCH 6L6GC Tube for Power Amplifier, Single

Groove Tubes GT-EL84-S Medium Power Amplifier Tube, Matched Pair (2)

KOCH 6L6GC Tube for Power Amplifier, 2-Pack

Galaxy Audio JIB/Y Jack In The Box Microphone Splitter

Groove Tubes GT-5U4 Rectifier/Specialty Tube for Medium-Power Fender Amplifiers

KOCH 6V6GT Tube for Power Amplifier, Single

Groove Tubes GT-5AR4 Rectifier/Specialty Tube for Higher-Powered Amplifier

Groove Tubes GT-EL84-R Medium Power Amplifier Tube, Matched Pair (2)

Behringer AMP800 Ultra-Compact 4-Channel Stereo Headphone Amplifier

Mackie HM-4 4-Way Headphone Amplifier

Behringer Micromon MA400 Ultra-Compact Monitor Headphone Amplifier, 15Hz-25 kHz Bandwidth, 2 kOhms Input Impedance

Nady HA-1X4 4-Channel Stereo Headphone Amplifier

Pyle Mini 2x40W Stereo Power Amplifier, 110/220 Voltage Selector, RCA Inputs

Behringer HA-400 Ultra Compact 4-Channel Stereo Headphone Amplifier

Mackie HM-4 4-Way Headphone Amplifier - With Stereo 1/4" Female Phone to 1/4" Male Phone TRS Headphone Cable, 25'

Bugera EL84-4 Matched and Hand Selected Power Pentodes, 4 Pieces per Pack

On-Stage HA4000 Pro 4-Channel Headphone Amplifier