NOS Tung-Sol 5U4GB Rectifiers

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mches
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NOS Tung-Sol 5U4GB Rectifiers

Post by mches » Sat Aug 27, 2011 2:35 pm

Hey all,

Just recently made the switch from the standard Mesa 5U4G rectifier tubes to NOS Tung-Sol 5U4GBs in my Rev G 2 channel Dual Rec. I wasn't really expecting too much of a difference, but was surprised once I fired the amp up.

While the overall tone of the amp did not change, there was a definite change in the way the amp responded to my attack, as well as an increase in note separation and articulation while on channel 2. With the volume knob on the guitar rolled down to about half, picking lightly produced an extraordinarily clear clean tone which my dual rec had never really been able to produce before. At the same volume setting, digging into the strings brought in an extremely articulate grit that had me grinning. Each note was very clearly defined. This difference was maintained with the volume knob on the guitar at full.

This increase in response and articulation was just what I'd been looking for with this amp, as nuances in my high gain riffing tended to be swallowed before making the change. I would highly recommend changing over to NOS rectifiers, especially if you get your clean sounds mainly by rolling back on the guitar's volume.

As a reference, here's what I'm using in the rest of the amp:
V1: Long black plate Raytheon
V2: RFT
V3: RFT
V4: Some cheap Sovtek (I bypass the loop)
V5: Long black plate Raytheon

Winged C EL34s in the power section.

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domct203
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Re: NOS Tung-Sol 5U4GB Rectifiers

Post by domct203 » Wed Aug 31, 2011 11:23 am

IME those are some of the best 5U4GB's ever made. The Raytheon is an excellent one as well.

Dom
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Gtr_Pkr
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Re: NOS Tung-Sol 5U4GB Rectifiers

Post by Gtr_Pkr » Fri Sep 02, 2011 11:09 am

That sounds like an excellent set of tubes. Pricy, but I bet it was worth it. Might have to try this with my TR. I recently switched off of the Silicon diodes, and I am liking the sound of the amp with the tube rectifiers at low volume. Thanks.
Triple Rectifier>JCM 800 slant>JCM 900 bottom = RIP YOUR SKULL OFF!

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domct203
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Re: NOS Tung-Sol 5U4GB Rectifiers

Post by domct203 » Fri Sep 02, 2011 12:36 pm

Gtr_Pkr wrote:That sounds like an excellent set of tubes. Pricy, but I bet it was worth it. Might have to try this with my TR. I recently switched off of the Silicon diodes, and I am liking the sound of the amp with the tube rectifiers at low volume. Thanks.
They are really not that expensive, I think I paid $25 or $30 for my pair.

Here's an Ebay auction to watch. I have never bought anything from this peticular seller, but he guarentees his tubes.

http://www.ebay.com/itm/3-X-5U4-GB-TUNG ... 3a69aa0f47

Dom
'07 Roadster Voodoo modded
'08 Stiletto Deuce II
'10 Mark V - sold
'18 TC-100
'01 Recto 4X12 Slant
'04 Recto 4X12 Slant/Straight
'74 Les Paul Custom
'95 American Strat
'12 Les Paul Signature T
TC G-System
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