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The 333XL/333XL-212 is the big brother to the 333 Series, with four key additions: Overall active Presence control. Comes loaded with EL34 power tubes for a more compressed, tighter midrange. Noise Gate on Lead channel. This is an ANALOGUE gate that will never close or shut you off in a clean passage. It is designed to decrease high frequency noise and hiss without changing your tone and it works loads better than a lot of competitors' gates. XL switch on Crunch and Lead channels. The XL function will add more "chunk" to your sound. You can add some thunder to the combo version to more closely emulate a 412 cab, thicken the sound of single coil pickups or add sustain to single-note melodic passages. After that, this design is much like the 333 with three fully independent channels: A totally Clean channel that won't break up; a Crunch channel for a "halfway dirty" rock and blues tone (or crank the gain for a metal rhythm tone); and a Lead channel with the same structure as the Crunch channel, but with access to more gain. Each of these channels has its own volume feeding the overall master volume, giving you total control over the level of each. Infinium Valve Life Multiplier Technology. Our revolutionary Infinium Valve Life Multiplier technology is like having your very own technician inside your amp constantly monitoring and tweaking valve performance for the ultimate in tonal integrity and reliability. This revolutionary circuit not only optimizes the performance of each output tube, it dynamically balances the drive between them to more evenly distribute the load. With Infinium, your tubes last up to 20 times longer, saving you substantial money over the lifespan of your amplifier. Infinium also compensates for the effects of aging, automatically adjusting current levels to keep your valves sounding as good as the day they were installed.

  • Fully independent Equalizer sections for each channel with dedicated Bass, Mid and Treble control.
  • XL switches on the Lead and Crunch channels for absolute killer sounds.
  • Classic Presence control for effi cient midrange sound shaping.
  • Integrated high-class reverb with dedicated Reverb control
  • Line output with dedicated Level control.
  • Hand-built 120-watt amplifier driven by 4 x EL34 valves (convertible to 6L6)
  • Classic 3-channel preamp design (Clean, Crunch, Lead) featuring 4 x 12AX7 valves.
  • Impedance switch (4, 8 and 16 Ohms) to match virtually any speaker cabinet.
  • MPN : 333XL-INFINIUM
  • UPC : 705105162287

Audio MIDI Plus is committed to deliver the best experience for our customers. If for some reason you are not satisfied with your purchase, you may return it for a refund of the purchase price, an exchange or a store credit within 30 days from the ship date. 

In the unlikely event that you received a defective product, a wrong product, or damaged product, Audio MIDI Plus will replace it at no charge of any additional shipping cost. We will send you a prepaid label to return the item, and ship you a replacement. You will not incur any shipping charges. Please notify us of any of damaged, defective or misshipped products within 14 days.

After 30 days, you may request manufacturer warranty if your item malfunctions. Unless otherwise specified, Audio MIDI Plus is an authorized dealer for all the brands we represent.

How to request a return:
Please email us or call us to obtain a RMA number. All returns must be in a re-sellable condition and include all packing materials, accessories and paperwork. We may apply a restocking fee if the returned products fall into these following categories:

  • Missing original packaging, manuals, accessories, or any contents that was included
  • RMA number was not associated with the return
  • Items not in original like new condition

Please send all returns to:
Audio MIDI Plus Returns
3725 Saddle Drive,
Carlsbad, CA 92010

The following items are not returnable, unless received DOA, in which we will send a replacement:

  • Software
  • Electronic Delivery of Software
  • Special orders
  • DVD’s

Items that fall into the in mouth and in ear use category, such as mouthpieces, earphones, ear plugs, harmonicas, cannot be returned due to health regulations

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While most items are in stock either in our retail store or fulfillment warehouse in Carlsbad, CA, in some cases items may need to be ordered and/or drop shipped from the manufacturer. Please allow 3-10 days for order processing, fulfillment, and setup, as well as transit and delivery time. Tracking will be available within 48 hours in most cases.

Please call us at (844) 577-4502 10AM-6PM PT M-S for an IN-HAND description of the item that you are interested in. We are always happy to help, and look forward to speaking with you if needed. Live Skype may also be available for you.

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