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3rd Power Clean Sink MKII 20 Watt 1×12 Combo Amplifier


In stock

We're currently out of stock on this item but if you'd like to inquire about incoming stock, a special order or a custom build, use the form below to get in touch with one of our specialists, and we'll get you taken care of!
– Matt's Music Staff


From 3rd Power:


Three Iconic Blendable Amps in One



Combining and layering multiple amp voices has often been one of the “tricks” the pros have used to achieve their signature sounds.  Based on the ‘clean’ channel of our flagship Kitchen Sink 6VEL amplifier, the CLEAN SINK MKII gives you the ability to do just that!

It features three blendable voices (American, AC or switchable AC Top Boost) that are managed by our proprietary Voice blend circuitry.  Pan hard left and you have an American black-panel voicing, hard right and you have British AC tones, anywhere in between and you’re creating your own signature blend of iconic guitar tones.

Running on a pair of 6V6 power tubes, the 20W CLEAN SINK MKII delivers a full-bodied tone and punchy response thanks to our enhanced enclosure featuring our legendary triangle ported back baffle design.  Our all-tube spring reverb, proprietary Hybrid-Master and Treble Damping control round out the features of this superb amplifier.

And like all of our hand-wired, point to point amplifiers, the CLEAN SINK MKII comes with a limited lifetime warranty for superb peace of mind.


American, AC and Top Boost AC!


The CLEAN SINK MKII features a VOICING knob that lets you blend (layer together) American and British clean tones.  Pan hard left and you’re all American, hard right and you’re all British.  Pan in the middle and you’re playing through both amp voices simultaneously.  Each voice stays clean or breaks up as it should based on where the volume knob is set.

A great example of this would be to blend the AM with the AC for American Black-panel tones that stay clean and punchy while the British AC chime breaks up and sustains the same as playing through two separate amplifiers.  See below for a description of each of the three individual amp voices available on the CLEAN SINK MKII.


The CLEAN SINK MKII features a spanky clean ’65 Blackface amp voice with all of the fat blackface tone and bounce you’d expect from a vintage amplifier.


The CLEAN SINK MKII features a chimey clean AC tone and response that’s decidedly British with superb clarity.


At the flip of a switch, the CLEAN SINK MKII jumps to British chime with punched up gain and sustain – right in line with what you’d expect from a vintage Top Boost amp.


Where You Enhance and Refine to Perfection!


The CLEAN SINK MKII features a mastering section to provide the tools you need to refine and enhance your tone.  HYBRID-MASTER™ controls your overall volume.  HF DAMP controls the overall high frequency content.  The REVERB controls the overall sense of space to your sound.  See below for a description of each control here in the mastering section of the amplifier.


The TUBE DRIVEN SPRING REVERB effect utilizes a dual-triode preamp tube operating in Class-A along with a real spring reverb tank to deliver an exceptional reverb effect based on 3P’s AMBIENT MODE.  The LEVEL control sets the overall volume of reverb.


HF DAMP allows you to control the high frequency content of your sound without killing the chime and harmonics.  Use this control when perfecting your sound in artificial listening environments such as in-ear monitors. Or, use it to sweeten up the high frequencies as part of your overall sound.


HYBRID-MASTER is our patented volume management circuitry that allows you to control the overall volume in the room independent of the tone and feel.


featuring our legendary triangle ported back baffle


The solid pine CLEAN SINK MKII 112 combo enclosure was designed to accommodate 12″ speakers of most sizes, including the Celestion Alnico Gold with its extended magnet bell design.  The new design also includes a baltic Birch back panel that features 3P’s unique triangle port design to deliver your full frequency response with a clarity and punch that sounds more like a mastered record and won’t get lost in the mix.  

This is the exact same tech principals we’ve utilized on our flagship amps and cabs including the American Dream, British Dream, Dual Citizen and helped contribute to the huge tones coaxed out of the original Dream Solo Series amplifiers. 

Special Features:

  • Three Blendable Voices (American, AC or AC Top Boost)
  • Head and Combo Versions Available
  • Hand-built PTP on Turret Boards in Nashville, TN
  • Custom American-made Transformers
  • American-made 12′′ WGS Green Beret Speaker (optional Celestion Alnico Gold 12″)
  • Patented Hybrid-MASTER volume control
  • Treble Damping Circuit for the perfect IEM mix
  • Studio-quality Tube Driven Spring Reverb
  • Enhanced 112 Combo Enclosure Design
  • 2 x JJ 6V6S power tubes (20W)
  • Limited Lifetime Warranty


  • Model Name: Clean Sink MKII
  • Output Architecture: 2x Power Tubes (Class AB), Fixed Bias
  • Power output: 20W (6V6)
  • Plate Voltage: 120V AC input yields ~425 V DC plate voltage
  • Controls: Volume, Voicing Pan Pot, Treble, Bass, Reverb, Hi-Freq, Damping, Hybrid-Master
  • Output Impedance: One 8 and two 4 ohm output jacks
  • Internal Speaker (Combo): WGS Green Beret 12″ Speaker (8 Ohms)
  • Preamp Architecture: 2x JJ ECC83S, 2x Sovtek 12AX7LPS
  • Materials and Dimensions: 3/4in Solid Pine Cabinetry, Birch Front Baffle. 112 Combo: 19.875″ (W) x 16″ (T) x 9.5″ (D)
  • Weight: 112 Combo: 31lbs
  • Certification: CE Certified

Shipping & Returns

Free Shipping

Most orders over $99.00 ship for free inside the lower 48 states. Certain items that are large and heavy do not qualify for free shipping.

We Ship Worldwide!

For information on International Shipping, please call, email or use live chat for rates. Orders shipping outside the Lower 48 States to Hawaii, Alaska, Puerto Rico and international orders do not qualify for free shipping. Orders shipping to U.S. Military APO/FPO addresses, PO Boxes, and US territories (Guam, Virgin Islands, etc.) can only ship USPS. NOTE: Boxes over 70 lbs each cannot be shipped to these locations.

As a security precaution, orders over $200.00 will only ship to the address your credit card company has on file for you.

*Korg and Mesa/Boogie products are only available for shipment within the USA.


We want you to be completely happy with your purchase, so we offer a 48 hour approval period on most purchases (see exclusions below). The 48 hour approval period begins when your purchased item is delivered to your door. If after 48 hours you’re not happy with the item, just contact us via phone, email or live chat on our website to arrange for a return authorization (RA#) and return shipping instructions. Any package sent back without prior authorization will be refused.

Returns must be shipped back to us within two days of the RA being issued. Items must come back to us undamaged and in the same condition they were shipped out. All manuals, paperwork, cables, tremolo arms, wrenches, etc… must be included or full credit will not be issued. Any items not conforming to this policy will be subject (at our discretion) to a restocking fee of 20% of the purchase price.

Refunds will be issued minus all related shipping expenses, if free shipping was initially given, the cost we incurred to get the item to you will be deducted from your refund. A 10% restock fee will also be deducted from your refund. Restock fees will be waived for full value exchanges.

Here are exceptions to our return policy.

  • Custom orders of any kind are non returnable and non refundable. We often charge a deposit before we will place a custom or special order. All special order deposits are NON REFUNDABLE, no exceptions.
  • Microphones, Harmonicas, In-Ear Systems and any other items that come into contact with your mouth or ears.
  • Items labeled as BLOWOUT, are non-returnable. These are often being sold below cost and are considered “all sales final”.
  • Software (this may also include hardware that includes software), unless still in shrink wrap with barcode affixed.
  • Guitar strings, blank media, and other disposable merchandise.
  • Guitar or bass pickups that have been installed or used in any way.
  • Any item advertised as “USED” is non returnable.

*Payments for music lessons are non refundable, no exceptions.

View our detailed Return Policy here.

Early Order Cancellation

All deposits are non refundable. Lots of our products are special orders and in many cases your order has to be built for you at the factory. This is what makes a lot of our products special. Once your order is started, it's being put together just for you. For this reason we ask that you don't cancel your order after you place it with us. If for some reason you absolutely have to cancel your order with us, we will assess you a 25% cancellation charge. This amount is equal to 25% of your total order amount. Ask us before you place your order to see if what you're purchasing is considered a special order.

Damaged Merchandise

Do not accept your shipment if the package shows any signs of external damage. After the item is returned to us we will ship you a replacement. If you receive incorrect or defective merchandise, please call 781-335-0700 within 5 days for a return authorization number.