5U4GB Electro Harmonix Premium Tested for a Dependable Rectifier

5U4GB  by Electro Harmonix is brand new  The 5U4GB is used in many American made amp designs such as Mesa Boogie and Fender


7 in stock (can be backordered)

Product Description

The Electro Harmonix  5U4GB Rectifier Valve is used in famous amps such as the Fender amps.

Valve rectifiers  are characterised by the ” sag” that they introduce which is a bit like compression. The result is a better sustaining note at the same volume as an amp with solid state power supply rectification.  5U4GB’s do give a better sound!.

The 5U4GB will produce a 100 watts of HT voltage so is excellent for 50-80 watt guitar amps.  The original black & silverface Fender Deluxe Reverbs used the 5U4 rectifier and that is one great sounding amplifier.t

We also offer a 120 day from purchase warranty on the product ( excludes user caused mechanical damage failure). We test every 5u4GB on our AVO  testers before shipping. We test every unit and the test results are labelled on the box, to give you the assurance of a quality brand new product

You might like to check out our blog on repairing valve guitar amps by clicking here

This  Rectifier  is the better alternative to replacing your old worn 5U4’s  with solid state rectifiers.  Over time, valve rectifiers loose emission and so their impedance increases.  This leads to a lower voltage especially on your output stage in your amp which can mean less clean sounds at higher volume or even lower maximum volume.

We test every 5U4GB that we ship

You can see the data sheet here

We stock a whole range of rectifiers for all amps and all are tested by us.  We have JJ Sovtek EH and Tung Sol rectifiers always in stock 

Note: Valves use high voltages and these voltages are dangerous. The amp can still retain these high voltages for some time even after being switched off.  If you are not sure of fitting them , please seek the services of qualified personnel

Additional Information

Weight0.1 kg


Customer Reviews

Star rating Star rating Star rating Star rating Star rating

"Unsurpassed service backed with reassuring depth of knowledge of thermionic." - John A 6th Nov 2019

Star rating Star rating Star rating Star rating Star rating

"I ordered the quad for my stereo amplifier and they sound really great (more tight bass, well focused mids, sweet and “airy” highs. A step-up from the previous set. They were sent very well packaged and were shipped promptly. I cannot coment on the matching process, since I am not that experienced, but common sense says it is an advantage. Fact is that they sound really good. Totally satisfied and I guess I will be a regular customer from now on.."- A.L. 29th October, 2019

Latest from the AMP TALK blog...
WP2Social Auto Publish Powered By :