Blackstar Amplification HT Studio 20H
Blackstar Amplification HT Studio 20H

HT Studio 20H, Tube Guitar Amp Head from Blackstar Amplification in the HT-Venue series.

  • Increase or decrease font size
  • Print
  • RSS

All user reviews for the Blackstar Amplification HT Studio 20H

  • Like
  • Tweet
  • Submit
Average Score:4.6( 4.6/5 based on 13 reviews )
 7 reviews54 %
 5 reviews38 %
Value For Money : Excellent

kyzcawon's review

Blackstar Amplification HT Studio 20H
One jack input with built-in FX loop. Possibility to connect 8- or 16-ohm speakers.

25 watts (tube) with a good amp reverb.

The amp is very versatile, from blues to aggressive rock.


It's very easy to dial in, in my opinion. You can get a good sound relatively fast :)


It's perfect for my style of music, hard rock, rock, rock 'n' roll. To play metal I use a pedal to have more distortion.


I've been using it for three years now, I tried some Vox and Marshall amps, but I like Blackstar because it's more of an underdog brand that deserves some serious attention.

rempij's review"Awesome. Enhanced by an upgrade ...."

Blackstar Amplification HT Studio 20H






The sound has lost a bit of its grit after one year of use. I just bought a les paul tribute epiphone and I was a bit disappointed with the result, compared to when I tested it in the store. After doing some research on the Internet, I decided to retube the amp. A local store gave me some info and I went for it. The bias setting is automatic, you only need to have matched tubes for the power stage. I used two 12ax7 groove tube gold series for the preamp and two JJ El 34 power tubes. And the sound is now amazing, I rediscovered my amp. Warm sound with a crystal clear pinch for the fender strat, the overdrive is better defined and with a nice crunch with a low gain. Don't hesitate modifying the amp when you want to give the amp a new life. The re-tubing cost me $80 for the groove tubes and $65 for the JJs. ... Not cheap, but I don't regret it at all!

GutsMiura's review

Blackstar Amplification HT Studio 20H
All-tube amp
In terms of controls it has bass treble middle gain volume and what not for the overdrive channel, while the clean channel only has a tone and a volume control. The amp head also features a reverb.
20W all-tube amp
One 8ohms and two 16ohms outputs.


Dialing it in is more or less basic, the pots are really responsive, so you can start having a blast pretty quickly without breaking your head.
The manual is a bit "useless" because the amp head is easy to use, I know it for a fact because I "browsed" it...And I put that in quotation marks because It's so easy to use that it takes a whole page to explain how the footswitch or the pots work.
Is it easy to get a good sound out of it? I'd say yes, due to its simplicity, but if you want to get your own sound, you'll need to dig further into it.


In my opinion, it's good for all styles, certainly due to that famous function called ISF: A small pot that you turn right to get an American sound and left to get a British sound.
I find the sound is in itself fat enough, but it is so incredibly versatile and you can get such a vast array of sounds. You need some time to get to know all its functions, though.
I love the clean channel as much as the overdrive. With a good responsive neck pickup you'll get a sound worthy of the best current amps, with the overdrive you'll get an incredible sensation of power. The only two snags are that the amp lacks a bit of personality and the reverb, which you should use sparingly because it has a tendency to become nasty...


I got it very recently, almost two weeks ago.
I tested many amps before this one and, to be honest, this brand didn't really seem to win, but in the end I bought it due to its value for money.
What I like the most about this amp, besides its sounds, is the simplicity...It's truly plug-and-play, no bias adjusting or anything of the sort, the pots couldn't be easier to use and they are effective...
As I said before, its value for money is simply insane. It's surprising that IMHO an amp like this is more convincing than a jcm amp, and it doesn't even cost $1000.
With hindsight, I don't know if I would buy it again, I mean, I chose it because I wanted to change my solid-state sound and I love it...But if I were 40 and had some tours in sight, I think I'd get a Mesa....But until that day comes, I won't regret a thing!

iamqman's review"fantastic amp for the money."

Blackstar Amplification HT Studio 20H
Wow this company keeps pumping out the goods. They are effectively design and marketed great quality and sounding amplifiers. Many touring and professional artists all over the globe are now turning towards Blackstar for their guitar amplifier needs. The have successfully taking a huge niche in the market over the last few years.

This amp sounds fantastic in both the clean channel and the gain channel. The most impressive thing is how natural it sounds and how well balanced the two channels are with the independent voicing gain structures.


Blackstar HT Studio 20 Combo Guitar Amplifier Features:

20-watt valve combo amplifier
2 x ECC83 and 2 x EL34 tubes
2 x footswitchable channels
12" Celestion speaker
Enhanced tone controls
Patent-applied-for Infinite Shape Feature (ISF)
Master volume control
Digital reverb
Speaker emulated output
Effects loop
1-way footswitch included
Cool vintage styling
Weight: 45 lbs.
Dimensions: 22.6" x 20.8" x 11.4"


The tone from this amp is remarkable. The clean channel is brilliant on its own. It has a sparkle character that makes you feel the tone of the guitar in your hands. There is a quality to the guitar amp that makes you notes just pop and chime the way you desire a good clean channel to give you.

The overdrive channel sounds fantastic in both humbucker pickup guitars and single coil pickup guitars. The tone is robust and smooth at the same time. It is an amp that just sounds amazing every note you strum or pluck on your guitar.


At new these amps come in at around $600 which is just a steal of a price if you ask me. They have such a quality of tone to them that is superb. I only hope other amp companies take notice at the sound of these amps.

If you need a good sounding amp that will not break your budget too much then this might be the amp for you. They have 2 amazing channels and each on their own is worth the price if this amp.

fvibe's review (This content has been automatically translated from French)" Effective"

Blackstar Amplification HT Studio 20H
tube amp 20 watts
brief description is on the site of Blackstar
it's simple and effective enough for indoor or outdoor café-concerts, no problem and if transplanted facade.
manages the footswitch does the channel change management loop and reverb would be very boring.


typical configuration:
a clear channel: not simple volume and tone, the tone really tuning its efficiency.
a distortion channel: gain and volume, EQ, ISF.
the effects loop with volume pot + - 10db is very convenient
I have not tested the output emulated
superb reverb, do not hesitate to put in (50% minimum)
a master volume: very effective.
three outputs for HP: 8 ohm 16 ohm
no standby .... just remember to lower the volume before turning off the power, if not the slap.
SOUND: Its Always Rings
the manual? ..... however his serves over


amp very polyvalant finally, even if a first, a modern coat can be, for sure, it is not in the vintage but with a strat on the clean channel with at least 50% of reverb was THE his strat. with a Les Paul, the second ca severe crunch channel! it is his chosen field.
amp accepts pedals very well. has both upstream of the amp or in the loop.
portad when the ISF is mastered, there really is something to please marshall sound is very easy to get the sound Rican may be somewhat less relevant .....
on the other hand is not correct, unfortunately, but with the new pedals from home and boogie equa in the loop, I'm sure it's possible. and then putting at least one SPAX 12AX7 mesa boogie ...
note: I changed the tubes and on the recommendation of gilou of audiotubetech, the sound really took its magnitude.


to synthesize:
bought used in stack (head + 2x12 brand) for less than 500 euros.
I'm using it for over a year. it has never failed me.
20 watts: Power is perfect. what do get on the tour for THE real sound of a tube amp (thank you the master volume)
the connector is standard and effective.
20 years of passion and has owned include: a boogie mark IV (LA class), an orange Hustler (A sound!), a Marshall JCM 800 (reference), passing on the H & K, etc ... peavey passage is rather delicate (normal, that is not the same range either) but just enough time to take possession of his qualties.
only inconveniant: Hp 2x12 is good but the actual sound is broadcast over the distance, the sound is in near dark. the whole is impressive all the same, it's nice at first but on stage .... it quickly cumbersome.

to note: let's say 8 or 9/10. when we owned a mesa boogie MARK IV, the other amps necessarily leave us none the wiser.

ced126's review (This content has been automatically translated from French)

Blackstar Amplification HT Studio 20H
20W all-tube head 2 ECC83 and 2 EL34.
Output: 8 Ohms, and 16Ohms 2x16Ohms.
2 channels, a digital reverb damn nice!
Effects loop.
Footswitch (included).

I put 9 because of the lack of standby which may interfere with some one even if personally, this is not my case ...


I use one at home and in rehearsal. I hesitated with his big brother HT40 (combo) or ht50h (head) but 20W is more than enough to cover a battery (well, it is not a drummer 150kg in steroid or death metal, but is that tape still good!). Clarification, it also holds the road clean, I play with a Les Paul (humbucker so) and I can cover the battery clean without worry. Although not yet tried it, I'm sure 98% it will also kick in cafet / bar / small room (anyway beyond, it is transplanted).

The config is simple:
- Clean: 1 tone and 1 volume
- OD: 1 ISF, 3 band eq, gain 1 and 1 volume
- General: 1 master and 1 reverb (which does more than keep the road)
Some will complain about the lack of standby but hey, just put the knobs of the guitar and the volume and amp gain to 0, it takes exactly three seconds and a half ...

Its versatility and simplicity allow to nab a good sound easily! After that, it is sure that we, as guitarists, we like to tweak, especially if the pedal is used.

As for the manual, it can be of great help! In fact, if you galérez to get the fire in your barbecue, type it in, it'll be better right away! : D


So I play everything: Muse, Red Hot, Led Zeppelin, Nirvana, AC / DC, Blink, White Stripes, Gun's, U2, Pink Floyd, etc.. Many things which have nothing to see at a glance: p
Well for me, it makes me happy! I use some pedals (some, not 6453) and I get to touch everything a damn convincing!

First, the clean, I was a little skeptical when the tone only (no 3 band eq) but I soon realized he did his job: You can get a pretty clean neutral (at Marshall ) and a crystal clean, paying more in a fender style (I said in a "fender style" not "as a fender", no stoning please) pushing the tone knob. I get a good sound like funky Red Hot carefree and yet with a les paul.

For distortion, waaaah guys, this is the bomb! It is rather a big fat overdrive distortion that I found, but you will still go very far, I think for a Metallica or Black Sabbath p'tit it still does well, now forget the metal. .. The eq is effective, but no more, I say in the Marshall style. I also find it was a little up the volume knob to prevent acute loss of VERY LIGHT (I emphasize slight). The ISF knob is just insane: just left a typed his Mesa, middle, and Blackstar is all right, it's Marshall -> What up?

And finally, he eats great pedals!

In short, both the clean distortion that convinced me! The rhythm of this amp is great and his sound, which pays more in the bass and the medium is just as much! And besides, the beast is versatile!


In short, a good clean, a good distortion, pedal-friendly, an effects loop, sufficient power for group play, great versatility and fabulous style (because frankly, it has an amazing mouth) what else?

I've had a few months and it pleases me plenty! I think I'm in love ...

I did a long search before falling on it. Of course, I fell over quite quickly but the lack of eq bothered me, so I did not bother to try it right away, what a mistake! Not only the simple tone is super efficient, but in addition, it makes the machine much easier to adjust! Anyway, so I try AC15 (not my thing), a Hot Rod Deluxe (legendary clean? Yeah, really, but then there really is not convinced it's super garish, and the higher the volume unmanageable) TSA30h (not bad, but the Blackstar is better), Classic 30 (not like at all).

The value for money is excellent, of course, this is not the price of a pair of pumps, but it is a tube amp huh coconut hopefully not get out with 250 balls if you want something that sounds. .. So a big up for the Q / P! (Note: purchased from Thomann in stock B-550, when at Thomann, no introduction, impeccable service, fast delivery and great prices, I do not buy that over there).

I write this review based on my criteria of what I was looking for in an amp, and it satisfies all ample, a score that I gave him. If you want further information, do not hesitate! ;)

Blackstar Go!

dcangione's review (This content has been automatically translated from French)" BLACKSTAR 20 studio: I adorre"

Blackstar Amplification HT Studio 20H
Shame it will have a small chorus
it was good ...


Grafted one guitar.


Perfect for what I play


I play Blues, Rock, Hard Rock, I have a little Vox 15VT for the "no noise" (for sound and practical side) I tested the VOX AD60vt, a marvel, but I opted for the easier because there's more brilliant but very deep and warm, I have effects pedals, power 20w lamp but it sends serious! style very "trendy", beautiful cabinet with Celestion boot HP 12 "that lifting 20kg, I think the top for rehearsals in a small group (+ brt sound possible with speaker outputs) Anyway I love the clean sound saturated and it is true what I was looking, I like Vox + (my favorite) Fender, Marshall or equivalent + promo that paid 480E Rapshodie in Fréjus.

Freshly bought I left to take my dose of skyscrapers!

edenstef's review (This content has been automatically translated from French)" tip top ..."

Blackstar Amplification HT Studio 20H
hello, the Blackstar HT studion 20 combo has really connected ....
big fan of his (I played a peavey 5150 for 12 years), I offered this amp to see what it was! and especially to have one in my living room ... tube, because I think there is the way to go ...
This is an amp that has a very good finish (closed cabinet, leather handle, cabinet celestion 12 ', etc etc ... nothing wrong).
At his, no problem either ... a very good amplifier that does not alter too much the sound of the guitar ... very straight, with settings summary very simple and very effective ...
In my room, I really tripp ... big sound distortion at low volume (and good volume) ... but happiness ... top super clear sound, but no crunch without pushing the amp ...
on the other hand, repeating, channel distortion (at 2 / 3) is proved disappointing and a bit runny (knowing that we played hard enough), lack of grain and precision!
The clean channel because I was amazed on the other hand in good volume, it is really the road ...
At that time, I had the choice of him to add a second baffle 12 '(189 euros), or move on ....

I finally went to something else, because I needed a third channel ... ht the 20 has only two (with one big difference between them ... very light or super distortion )....

This is a great amp ... I buy some more when I would play in groups because it gave me a very good impression ...

FYI, I now play on EVH 5150 III ... and it suits me very well now ...

Here ... a +

stef. to see on







Anonymous 's review (This content has been automatically translated from French)" The versatility of modern"

Blackstar Amplification HT Studio 20H
20W lamps. See description on the net.

Two channels. A clean and overdrive. Digital reverb.

An effects loop + a line out.


very simple. Very versatile


Start, for light crunch to play 70s rock and blues.

I hate those big distos but it delivers is very good.

For his clear is the shop. Very far from a clean fender.

The HP is poor. A change then.

For the trick to a 12AY7 or T7 preamp on V1. It expands the range of the grain.


Very wide versatility.
jimi aymerix02/26/2011

jimi aymerix's review (This content has been automatically translated from French)" a bomb!"

Blackstar Amplification HT Studio 20H
Tube amp, and 2 EL34 2ECC83 TAD brand which already gives a great sound. (A small stint with my luthier bystanders, ECC83 EL34 are good but we would get better sound faith change)

So a guitar input jack (no kidding!) An effects loop, emulated output for a recording, a footswitch jack (supplied), 2 hp output (8ohms 16 ohms).

Celestion Rocket 50 (seventy Write 80 on the technical details but ...)

It was therefore of 20 watts RMS, powerful enough for repeated or small concert halls.

So a clean channel with just volume and tone, I wanted an eq separated, but ultimately the tone is very effective.

Then a distortion channel EQ with bass, middle, treble, then a system that allows FSIs to have a different grain (us or uk) in distortion. Found recess volume and gain in this channel.

Then a master, and reverb (beautiful by the way)

Well I put 9 / 10 I would explain what's wrong in global opinion


An amp is an amp, you plug it warmed (30 seconds or 2 minutes it will) (without stand bye is a little boring) (but I quibble la)
then turn the knobs, after plugging in his guitar and hop on his fate!

The manual is very clear, but is almost nothing, but you learn that you can register master 0, that's not bad!

The sound is just terrible, I prefer the clean from blackstar HT20 blues junior as you say ^ ^ '. And / overdrive / distortion I speak after

It accepts pedals very well thanks to its effects loop!

the there's no quibbling I just put 10/10!


I play everything from blues rock 70 80 and modern rock, hard rock, metal .... TOUTTTT except raggae ... and they suit me perfectly

this amp make me think of clean marshall ... it's just great!
Then thanks to the distortion level isf you get to have a multitude of different grain! is happiness!
The high gain amplifier is shown but no, it will stop just rhythmic metal, added a distortion pedal very hard to make big big big lead metalheads! (If not the Led Zeppelin solo or gun n roses goes largely)

I play it with a michael kelly patriot Q excelente guitar for that matter, and I get just about anything with aa.

Then I played with a ibanez afs 75 of home is also a killer sound! rock n roll man!

Premiere faith I tested this amp at the store it was with a Japanese TV, a telecaster + the amp's clean, it's just wonderful, and the distortion too ...

amp offerings sonoritées very rich, I do not like when there is too much distortion in the medium, it crushes everything ... but otherwise I love everything on it!

10/10 go


I use it for 6 months and I regret nothing, buy 499 (and yes now it is only 600 had to hurry the little: D)

I tried a Vox AC15, a blues junior, a blackheart, a jet city 20 watt (very good amp so that) the one who gave me the most over the three jet was the city, but I liked most blackstar the latter:)

What is unfortunate about this amp it is the lamp TAD of electro harmonix'll have been nice ...
The presence of non-standby, you'd think the last blues junior did not.

Bho wish I a vox AC30 or a Fender Hot Rod Deluxe amp but as I did not have enough money, yet I do not regret this purchase and would do without hesitation, I even predicted that mark and remained in buy either a 30 or a craftsman ONE 104 ...

Then bought 499 euros value for money is unbeatable ... even at the price now (600) it would be hard to do better now! especially for people looking for a versatile tube amp with 2 channels!