29% Off

Blackstar HT-20R MKIII 20W 1x12" Valve Guitar Amplifier Combo

SKU: BLHT20RMK3 MFR: HT20RMK3
Earn VIP Reward Points

Key Features

  • Experience dynamic tone with the Blackstar HT-20R MKIII valve guitar amplifier.
  • Unleash pristine sound via the enhanced clean channel tone control for precision.
  • Sculpt your unique sound with the patented ISF overdrive channel feature.
  • Enjoy versatile connectivity with stereo line input for flexible setup options.
  • Fine-tune your sound using the digital reverb for added depth and dimension.
  • Easily switch to 2-watt operation with the power reduction switch for practice.
See More Product Details
Special Order?Estimated to Ship: 08/07/2025
Free Shipping

See Options

Qty
1

Protect your gear with Adorama Protect.* Learn more

2 Year

$119.99

3 Year

$154.99

5 Year

$269.99

Available to U.S. customers only.

Need help? Ask our experts.

Overview
Compare
Specs
Protection
Q&A

Questions & Answers

Reviews about this item

Review Summary

Select a plan in the Add Protection section above and purchase with this product by clicking “Add to Cart”.

image-protection

TRUSTED PROTECTION PLANS, EXCEPTIONAL SERVICE.

Invest In Your Gear and Peace Of Mind!

Accidents happen. Protect your favorite Adorama products and purchase a protection plan to stay covered from accidental damage, mechanical or electrical failures, and more.

Repair or Replacement

Repair or Replacement

If we can’t fix it, we’ll replace it at no additional cost.

Accidental Damage

Accidental Damage

Protect your product from drops, spills, and more.

Peace of Mind

Peace of Mind

Enjoy your gear without fear. We have you covered!

Failure Protection

Failure Protection

When regular use of your product over time results in mechanical or electrical failure.

Zero Deductible

Zero Deductible

We will never charge you a deductible after the purchase of a plan.

Customer-Focused Support

Customer-Focused Support

Our claims process is simple & easy and our customer service team is happy to help.

Adorama Protect powered by Extend is available for purchase to customers in the United States. Not available for international or U.S. territories purchases. Plans on open box items do not cover pre-existing damage.
Adorama Protect plans are available for ABS clients. If you have any questions or require assistanse, please call 800-223-2500

Blackstar HT-20R MKIII Specifications

  • Amplifier Type

    Valve

  • Output Power

    20 W

  • Speaker

    1x 12" Custom-Designed Speaker

  • Valves

    2x ECC83, 2x EL84

  • Channels

    Two Footswitchable Channels, each with Two Footswitchable 'Voices'

  • Clean Channel

    Enhanced Tone Control for Precision Sound

  • Overdrive Channel

    Patented Infinite Shape Feature (ISF) for Dynamic Tone

  • Reverb

    Digital Reverb for Added Depth

  • Volume Control

    Master Volume for Exact Volume Adjustment

  • Power Options

    Power Reduction Switch for Easy Switch to 2 Watt Operation

  • Output Options

    IR-based CabRig Emulated Outputs to Balanced XLR, Stereo Headphones, and USB, with 3-Way Preset Selection

  • Software Compatibility

    Deeper Editing Available via Proprietary Architect Software for Reverb and CabRig

  • Effects Loop

    Includes Level Switch for Enhanced Compatibility

  • Input Versatility

    Stereo Line Input for Flexible Connectivity

  • Speaker Outputs

    Supports 2x 8 Ohm and 1x 16 Ohm Configurations for Versatile Setup

  • UPC Code

    845644008285

About Blackstar HT-20R MKIII

It's time to elevate your musical experience with the HT-20R MKIII 20W 1x12" Valve Guitar Amplifier Combo. This high-performance amplifier from Blackstar is meticulously designed to cater to the unique requirements of different amps, ensuring a harmonious interaction between the preamp and power amp.

The MK III Clean channel, a sophisticated yet seemingly simple circuit, offers versatility in producing a range of classic clean and crunch tones. It utilizes both parts of an ECC83 valve exclusively to generate any valve compression or crunch.

The HT MK III overdrive channels represent an evolution from Series One, HT MkI to HT Venue MK III. The gain structure and tonal shaping share the same basic building blocks, including the cascaded gain stages of an ECC83 double triode valve. Each amp's overdrive tones are specifically tweaked, tuned, and refined during extensive listening tests to optimize the tone for that model.

One of the key features of the Overdrive channels is their ability to clean up the tone when the guitar volume is backed off. This is primarily due to the way the signal is filtered or 'shaped' after the valve is overdriven. The HT MK III Overdrive channels use a second-order low pass filter to remove the unpleasant high-frequency 'fizz' without attenuating the signal below the cut-off frequency.

The patented Infinite Shape Feature (ISF) allows you to infinitely adjust the response of the tone control network between any of the traditional voicings. This feature enables you to design your own sound and truly find 'the sound in your head'.

The HT MK III amplifier models also feature Voice switches, allowing even more scope to tailor the tone of the amp. The Voice 1 setting is based on a classic American clean sound, while the Voice 2 setting is based on a vintage 'Class A' British tone.

The amplifier also features Blackstar's proprietary CabRig technology, an IR-based DSP speaker simulator that reproduces the rich, dynamic characteristics of real-world guitar cabs. With over 700 combinations of rooms, cabinets, and microphones, CabRig allows you to inhabit the role of a sound engineer and get outstanding results every time.

The HT MK III amplifier also doubles up as an interface for easy valve recording, with a USB-C connection for USB audio connection and connection to a computer to run Blackstar's proprietary Architect software for deeper editing of CabRig presets and digital reverb.

Designed for maximum reliability, all HT MK III amplifiers are thoroughly endurance tested on custom-built automatic test equipment to replicate many hours of real-life use in a few days of laboratory testing.

In conclusion, the HT-20R MKIII 20W 1x12" Valve Guitar Amplifier Combo is a powerful, versatile, and reliable tool for any musician looking to enhance their sound and performance.

Blackstar HT-20R MKIII Features

  • 20 Watt valve combo
  • 1x 12" speaker
  • 2x ECC83, 2x EL84
  • Two footswitchable channels, each with two footswitchable 'voices'
  • Enhanced tone control on Clean channel
  • Patented Infinite Shape Feature (ISF) on Overdrive (OD) channel
  • Digital Reverb
  • Master Volume
  • Power reduction switch for 2 Watt operation
  • IR-based CabRig emulated outputs to balanced XLR, stereo headphones and USB, with 3-way preset selection switch
  • Reverb and CabRig deeper editing available using our proprietary Architect software
  • Effects loop with level switch for +4dBu/-10dBV
  • Stereo Line input
  • Speaker outputs for 2x 8 Ohm and 1x 16 Ohm

Warranty Information

This product has a limited warranty of 36 months.

Key Features

  • Experience dynamic tone with the Blackstar HT-20R MKIII valve guitar amplifier.
  • Unleash pristine sound via the enhanced clean channel tone control for precision.
  • Sculpt your unique sound with the patented ISF overdrive channel feature.
  • Enjoy versatile connectivity with stereo line input for flexible setup options.
  • Fine-tune your sound using the digital reverb for added depth and dimension.
  • Easily switch to 2-watt operation with the power reduction switch for practice.

What's in the box:

  • Blackstar HT-20R MKIII 20W 1x12" Valve Guitar Amplifier Combo
  • Blackstar 3 Year Limited Warranty