Preferred Series 274B / 5U4G

7 Reviews
Out of Stock
SKU: PS-274B
USD $‎39.95
Each
The Preferred Series 274B tube is a full-wave rectifier that is very similar to the classic 5U4G. This 274B tube's filament draws 2.5A of current. This current draw makes it acceptable for many amps originally designed for a 5AR4/GZ34 tube. Our PS-274B tube is a beautiful large coke bottle shaped rectifier tube with large black plates. The installed height is 5 inches. Its width is 2.5 inches at the widest point. Space may be an issued in some amps so be sure to check this.

This tube is produced for us in China by the Shuguang factory. A new evacuator is utilized for a much longer time period increasing vacuum over 100 times more than their current 5U4G tube. A new cathode coating process provides a much smoother finish improving electron flow and they are burned in at high voltages for a much longer time for improved stability. The end result of utilizing these new production materials, techniques, and equipment is a premium rectifier tube at a much lower cost than the NOS Western Electric 274B.

As a Preferred Series tube these are further tested on our digital high voltage equipment to make sure the tubes selected for you will provide outstanding tone and performance.

Warranty: The Preferred Series 274B tubes carry a 6 month extended warranty.

Other Preferred Series tubes          5U4 Types

Warranty Information and Return Policy

Warranty Period: 6 months

Preferred Series tubes have a 6 month warranty from date of purchase. (Any exceptions will be noted on that tube's Warranty tab)

If you receive a tube that does not perform to the manufacturer's specifications, please do the following:

- contact us to get a return authorization
- return it via regular mail within 180 days from when we shipped it, and we will provide an exchange or refund of the full purchase price of the tube.

Returns not related to warranty or defect will be considered at our discretion, and are subject to a 15% restocking fee.

We can not accept returns that don't have an authorization, are past 6 months, or are returned improperly.

These guidelines may be updated without notice.

Ratings & Reviews

7 reviews

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Very Pleased

by

I use this rectifier tube in a home built 5E3-style amp and the sound great. The 274B is significantly less spongy than the standard 5Y3GT that is usually found in that circuit. The 274B adds headroom, clean(-ish) tones and volume.

I would recommend this experiment with 6V6's that can take punishment. I've tested with EHX, TAD, Tung-Sol and Mullard (even though the Tung-Sols and Mullards are not known for being particularly rugged). Right now I'm switching between Tung-Sols and Mullards.

GREAT SOUNDING!

by

Great Tube used in my custom hi fi amp and pre. They look great and are very large.
Has air and 3d sound that I do not get from a 5u4g tube either NOS or new production. Best sounding tube for the money IMO. Have used a few of these for 6 months or so and are holding up well.