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5AR4 STR - Tube Amp Doctor

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Item ID: 004556
List Price: $23.00
Price: $20.24
You Save: $2.76 (12%)
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Tube Amp Doctor 5AR4 Rectifier, Premium Selected A faithful reproduction of the Mullard/VALVO GZ34. Pure power and the typical sag is the distinguishing characteristic of the most popular guitar amps of the 1960s guitar heroes till today.

UPC/EAN: 609722123310

RoHS Compliant

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Product Reviews

5.00 out of 5 based on 3 reviews

Replaced a brand new Ruby with a TAD 5AR4 STR and found it to have a little more beef and vibe. Will definitely use them over other new production 5AR4s.

Anonymous - October 14th, 2017

The tube worked great. Prompt shipping, good packaging. Thanks!

Peter A Barker - November 30th, 2015

These TAD 5AR4 rectifier tubes are the best! I built my own high end reference tube amplifier 5 years ago, I used cheaper 5AR4 rectifiers and they lasted about 6 months. I switched to the TAD Premium Selected rectifiers and they have been working flawless for the past 4 years. I want to add that in 4 years time I have played this amplifier the equivalent of 12-15 years. There are many days it is playing 15+ hours a day for the past 4 years.
TAD makes the best, most consistent, reliable 5AR4 rectifier tubes that I have ever used! I have twin power supplies and even after all the use on these tubes, the B+ comes up at the same time on both power supplies. Timed cathodes allow the 6L6's to generate a good electron cloud before the B+ is applied to the plates so that cathode stripping doesn't occur in the 6L6's.
I highly recommend the use of Tube Amp Doctor Premium Selected 5AR4 Rectifier tubes. The sag/voltage drop is very low and with proper filtering of the rectified B+ I have 0.001 volt of AC going into my reference amplifier. No hum, no buzz.
I could write a book about how much I love these tubes, but if your looking for the most reliable, consistent, durable rectifier tube, you need to try the TAD 5AR4 Premium Selected tube.

Dave Miller - June 19th, 2015

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