The Hughes & Kettner TubeMeister Deluxe 40 is a 40W tube amplifier head designed to provide versatile tones, selectable power output, and MIDI control for guitarists in rehearsals, recording sessions, and live performances. It features three 12AX7 preamp tubes and four EL84 power tubes capable of driving an 8 to 16 Ohms speaker cabinet via a 1/4" speaker output. Utilize the front-panel buttons or a footswitch (available separately) to toggle between the clean, crunch, and lead channels.

Power output is selectable thanks to a power soak switch with five positions—40W, 20W, 5W, 1W, and speaker off. Use the treble, mid, and bass equalization controls to sculpt your sound independently for the clean and lead channels. Integrate stompboxes via the switchable 1/4" series effects loop. An XLR 3-pin output delivers a balanced DI output for direct connection to a mixing console or audio interface. Red Box AE (ambience emulation) brings configurable cabinet emulation with choices including vintage, modern, small, large, line, and mic.

Integrated TSC (Tube Safety Control) keeps the tubes biased properly and shows tube status via two rear-panel LEDs. Incorporate MIDI control of channel switching and more via the MIDI 7-pin input. For increased protection during transport and storage, the TubeMeister Deluxe 40 is supplied with a protective carry bag.

Tube-Driven Amplifier Head    Clean, Crunch, and Lead Channels    40W Output    5-Position Power Soak Switch    Treble, Mid, and Bass Controls    Switchable Series Effects Loop    Integrated Tube Safety Control    Supports MIDI Control    XLR DI Output and 1/4" Speaker Output    Includes Protective Carry Bag

Three 12AX7 preamp tubes and four EL84 power tubes

Clean, crunch, and lead channels

Power soak switch with five positions—40W, 20W, 5W, 1W, and speaker off

Master and gain controls per channel

Treble, mid, and bass controls on clean and lead channels

Integrated TSC (Tube Safety Control) automatically adjusts tube bias and indicates tube status via two LEDs

Selectable 1/4" series effects loop

Rear-panel XLR DI output with Red Box AE customizable cabinet emulation

8-16 Ohms 1/4" speaker output

Supports footswitch control (FS-2 and FSM 423 MK III footswitches available separately) of channel and effects loop switching

MIDI 7-pin input allows MIDI control of switching channels, power soak settings, and effects loop status

Related Questions and Answers

Q: 1. I have three lens. Nikno 35mm, 18-140mm, and 70-300mm. Will I be able to use these with any of my lens and what kind of results can I expect? Thanks

A: Yes, you can use the extension tubes with these lenses. It will give you more magnification and will shorten the shooting distance. Autofocus is retained by these devices, however they may cause the lens' minimum focus distance to be so close that manual focus becomes required.

Q: 2. Can I use this on an FM2 fitted with a 28mm Nikkor lens or a 40mm Voigtlander lens?

A: Although these Vello Auto Extension Tubes can fit a Nikon FM2, focusing ability may vary when pairing your particular lenses with them.

Q: 3. Is this the replacement tube for the QT600 III ?

A: Yes, this Godox flash tube can also work with the QT600 III.

Q: 4. Can I use this flash tube with godox QS-600 flash head?

A: Yes,this should be the same flashtube for QS 600 head as well.

Q: 5. Will this work with the d750?

A: Yes, they are compatible with the D750.

Q: 6. Hi, will this work with QT600??

A: Yes. The following tube will support both models.

Q: 7. Can I use this flash tube for the Photoflex FlexFlash 400Ws Strobe?

A: The Godox 400Ws Flash Tube for SK400II Flash Head BH #GOFTSK400II is not suitable for a Photoflex flash.

Q: 8. would these work on the Sigma 135mm f/1.8 DG HSM Art Lens?

A: The Vello Auto Extension Tube Set for Nikon F are compatible with the Sigma 135mm f/1.8 DG HSM Art Lens for Nikon F cameras.

Q: 9. this lamp is 110 or 220 voltage?

A: The SK400 II is only for 110-120V, so this flashtube would follow those voltages.

Q: 10. I have a Nikon D5100,,the description for these Vello lenses say that they are not compatible with Nikon D5000 series cameras but some of the answers here and on other forums say they do work. Can anyone clarify/verify this for me?

A: I don't own a D5100, but they work with Nikon F mount. Should work with the D5100. Some lens may now auto focus.