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Personalised multi-point setup included

Before dispatch, your instrument will be treated to a full setup. That's not a quick tweak, but a full multi-point setup by an experienced guitar technician who will check and adjust every single thing on your guitar, bass, ukulele or banjo to ensure it is performing at its absolute best.

This is not a quick process but we believe every instrument should go through our process to acheive an exacting standard of playability.


We start with the frets on your instrument. All guitar necks move and change over time so we will make sure that your frets are nice and flat as we go up the neck. We don't want any high or low spots as this will mean your guitar will need a higher than optimum action and potentially suffer with fret buzz.

We check and properly profile the playing surface of the frets and then make sure the fret ends are finished off properly. The fret is then polished to ensure smooth string bending.

Truss Rod

Then it's on to the truss rod. This metal rod differs from guitar to guitar (some guitars such as classical guitars don't usually have a truss rod!) and basically controls the "relief" or curve of the neck. Not enough relief and your strings won't have enough clearance over the other frets when playing. Too much relief and you'll have a high action which gets worse as you go up the neck.

The heavier the strings then the more the truss rod needs to work. Proper adjustment in the workshop means that the action will be just right for the strings fitted to your guitar.

Top Nut

The top nut is super important and is one of the two open contact points of your guitar. The technician will check and cut each slot to make sure the strings both run freely but are not sitting in a slot that's too big.

The top nut also plays a big part in the action of your guitar so we'll hit that sweet spot between too low and too high.


Another really important part of your guitar!

On an acoustic, the saddle is cut to the correct height making sure the bottom is 100% flat and straight. This means the string can transfer its vibration properly into the body of your guitar.

For electric guitars, the saddles are adjusted to ensure your intonation is perfect. We will also match the saddles to the radius of your fretboard.

Bridge / Tremolo

The bridge affects the break angle and string height of your guitar and is also responsible for holding your saddles.

For a guitar with a Floyd Rose tremolo system or similar, the spring tension has to be just right to allow the tremolo to return to its "zero point" and keep everything in tune.

For guitars with standard tremolos, we can set it to float and be used both up or down like a true tremolo or we can lock the trem block back so the tremolo will only go downwards.... the choice is yours!


Intonation is the measure of how in-tune the guitar string is across the length of the fretboard and a guitar with badly set intonation will get more and more out of tune as the string is shortened when you play.

Tiny adjustments are made to each string where applicable to adjust its length and ensure that the intonation is set just right.

Overall Action

Once all the above has been completed, the guitar is checked for playability and fine adjustments are made. This step brings everything together and means your guitar will be set up optimally.

Machine Heads

Every machine head is operated and checked for function. We need to ensure that the machine heads operate smoothly.


All the functions of your guitar are checked to ensure everything is working as intended.

For acoustic guitars we will check the functions of the EQ system and controls as weel as check the internal cabling and jack socket.

For electric guitars, all the pickups are checked for function and tonal response. All controls and switches are operated to ensure they are functioning properly. The jack socket is checked.

Other Parts

All other parts such as strap pins, bushings, tuning buttons etc are fully checked.


All our instruments get the same premium treatment wether you purchase online or instore.

If you have purchased online, your guitar will be carefully packed ready for dispatch. You will receive a tracking link via email.

Happy playing :)

Blackstar HT-20R MkIII 20w 1x12" Valve Combo with CabRig
Blackstar HT-20R MkIII 20w 1x12" Valve Combo with CabRig
Blackstar HT-20R MkIII 20w 1x12" Valve Combo with CabRig
Blackstar HT-20R MkIII 20w 1x12" Valve Combo with CabRig
Blackstar HT-20R MkIII 20w 1x12" Valve Combo with CabRig

Blackstar HT-20R MkIII 20w 1x12" Valve Combo with CabRig

SKU: BA251001-H
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Description Reviews (0) Questions

The Blackstar HT-20R MkIII is the latest incarnation of Blackstar's ever popular 20-watt, 1x12" valve guitar combo. This MkIII version of the HT20R amp delivers great valve tone, tonal versatility and a compact design, and now features an upgraded modern look and access to the CabRig - Blackstar's worldclass IR-based DSP speaker simulator. The HT20R MkIII is a versatile guitar valve amp - great as small gigging amp, home practice combo or versatile studio tool.

The HT20R MkIII is a 2-channel affair, with foot switchable voices on both the Clean and Overdrive channels, giving you access to a wide range of tones.

The Clean channel features two voices. Voice 1 delivers that "American" classic bright tone with solid bass response, whilst Voice 2 target the "British" sound with a responsive chime, looser low end and ability to drive when pushed hard. The single tone control allows you to tweak the final sound.

The Overdrive section also features two voices. Voice 1, Classic Overdrive, is all about the classic "British" Blackstar overdrive, taking you from a rich natural drive to a super crunch, all whilst being able to clean up when you back off the volume. Voice 2, Modern Overdrive, is all about the "High Gain" - get aggressive high end with a tight, compact yet resonant low end.

You can tweak your tone with on-board ISF filter, Blackstar's unique design that'll give you infinite adjustment over the characteristics of each voice.

When you want valve tone but without the volume engage the handy Power Reduction. The switchable power reduction circuit gives reliable, transparent attenuation down to 10% of the amps rated power...taking the output down to 2 watts, ideal for home practice!

The HT20R MkIII comes loaded with a pair of ECC83 preamp valves, and a pair of ECC82 power valves. Utilizing Blackstar's push-pull valve power amp design, the HT20R MkIII delivers all the dynamics and response of a 100W stack but in the ultra-portable package.

Blackstar have given the HT MK III Series has a modern new look with a classy, boutique-like styling. The new panel has a clean look, with classic chickenhead knobs and a new paper fret. Blackstar have upgraded too high quality mini toggle switches, updated the LED colours and added a metal plate logo. 

The onboard CabRig technology is Blackstar's world-class DSP speaker simulation, which allows guitarists to choose between 100s of different cabinet, mic, mic placement and room settings. These settings can be saved and stored into 3 presets which can be recalled directly from the amplifier - great for live and studio settings!

With its selection of new features, fresh modern design and great valve tone, the Blackstar HT20R MkIII is a welcome update to the classic 5-watt valve amp. 

  • Innovative 20 Watt valve combo
  • 2 x ECC83 preamp, 2 x ECC82 push-pull power amp
  • Two footswitchable channels: boutique clean, high gain overdrive
  • Four footswitchable voices: American Clean, British Clean, Classic Overdrive, Modern Overdrive
  • Patented Infinite Shape Feature (ISF)
  • Studio quality reverb adjustable in Architect
  • USB-C for recording and connecting toArchitect and CabRig IR-based technology
  • CabRig outputs (1/4" stereo, XLR Balanced andUSB-C)
  • Stereo Line input
  • Power Reduction down to 0.5 Watt
  • Effects loop with effects level switch
  • Stereo mini-jack output for headphones and silent practising
  • 1x12" Blackstar designed speaker
  • Included FS-16 2-way footswitch andFS-22 compatible
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