Tube Amp

8 Easy DIY Guitar Tube Amp Mods

September 20, 2015
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Here’s a great article that explains how to mod your tube amp: 8 Guitar-Amp Mods for Newbies.

WARNING! Before you dive in, be aware that tube amps contain lethal (deadly!) voltages of electricity stored in the capacitors, even when unplugged. Do not touch unless you know what you are doing!

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Silvertone 1422 Footswitch

June 21, 2014

We get a lot of questions about foot switches for vintage amps. Here is the foot switch that originally came with the Silvertone 1422 (aka Sears 40XL) amplifier. It has switches to control both the Reverb and Tremolo effects. As you can see…

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New Page for the Vox Berkeley SRT

May 26, 2014
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The 1965 Vox Berkeley Super Reverb Twin (SRT) model V8, all-tube (all-valve) guitar amplifier with reverb, tremolo, 2×10 Alnico blues, and chrome stand. Built in 1965 by Vox USA (Thomas Organ).

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Silvertone Christmas, 1971

December 20, 2013
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Merry Christmas and Happy New Year from Tone Gems!
Ah, 1971… Intel releases their first microprocessor and Texas Instruments sells the first pocket calculator. The voting age is lowered to 18 years. Led Zeppelin releases Stairway to Heaven and John Lennon asks us to Imagine. And maybe you got your first Silvertone electric guitar and tube amp?

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Modified Silvertone Model 1421 Amp – Part One, The Tear Down

December 15, 2012
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The late 60’s and early 70’s Silvertone Model 1421 is a great little tube amp. It’s compact size makes it easy to take to practice, carry to a small venue, perfect for recording, and great for modifying. Here is Part One of a two part series on modifying the Silvertone 1421.

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Sears 10 XL (Silvertone 1421) Guitar Tube Amp

March 22, 2012
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This great little combo tube amp was built by (who?) and sold through Sears and Roebuck in the late 1960’s and early 70’s. It was originally sold as the Silvertone Model #1421, and in later years as the SR 10XL, and lastly as the Sears 10XL. Oh, the photo of this amp looks innocent enough, but, this is one serious sounding tube screamer. And you won’t usually find them as nice as this one!

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Two Silvertone Amps + Boss CE-3 = Stereo!

March 9, 2012
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I love stereo! That’s why I got pretty excited when I looked at my Boss CE-3 chorus pedal and realized I could connect a pair of amps to the CE-3’s dual outputs and play my guitar in stereo. So I decided pick up two inexpensive Silvertone 1421’s (aka: Sears 10XL) off eBay […]

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