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Review Summary
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Tube
20W RMS
2
1x Preamp 12AX7/ECC83
2x Power EL34/6CA7
8/16Ohms Mono
Yes, Series
Digital Reverb, Distortion/Overdrive
Yes
1x 1/4" Mono Instrument
1x 1/4" Stereo Line Level
1x 1/4" Stereo Footswitch
1x 1/4" Mono Effects Return
3x 1/4" Mono Speaker
1x 1/4" Stereo Emulated Speaker
1x XLR Mono Digital Output
1x 1/4" Mono Effects Send
1x USB Stereo Interface
Channel 1: Channel Volume, Tone
Channel 2: Bass, Channel Volume, Gain, Mid, Tone, Treble
Amplifier: 22.1 x 12.4 x 11.2" (56.13 x 31.50 x 28.45cm)
Amplifier: 24.47 lbs (11.10kg)
845644005000
What sets the HT-20RH MkII Studio 20W Tube Amplifier Head with Reverb apart is its ability to deliver powerful, high-quality sound, ranging from chiming 'boutique' cleans to full-on distortion. This professional-grade amplifier head, designed by the reputable brand Blackstar, is built around EL84s, known for their warm, rich tones.
With decades of valve amp design experience, Blackstar has crafted a product that combines the classic British valve's character with a carefully voiced preamp, resulting in lush valve tones. Whether you're seeking pure boutique cleans, mild overdrive that can be controlled by adjusting the guitar volume, or saturated distortion, this versatile amplifier head has you covered.
Ideal for both home and studio use, the HT-20RH MkII features a Power Reduction switch that reduces output to 2 Watts without compromising tone, perfect for driving the EL84 power stage. Its simple and intuitive controls are complemented by professional features such as the patented ISF control, studio-quality reverb, effects loop, XLR D.I. out, and USB speaker emulated output.
The HT-20RH MkII offers two footswitchable Clean Voices, one with an "American" character and the other with a Class A "British" sound. The first voice provides a bright and tight tone with a solid bass response, while the second voice delivers a highly responsive "chime" with a looser, resonant bottom-end.
The amplifier head also features two footswitchable Overdrive Voices, characterized by high gain tones that avoid the detached top-end "fizz" often found in other designs. The first voice offers the classic "British" Blackstar overdrive, while the second voice, inspired by the acclaimed HT Venue MkII high gain sounds, adds aggression in the high-end with a tight resonant low-end.
The HT-20RH MkII's patented ISF (Infinite Shape Feature) Tone Shaping allows you to infinitely adjust the response of the tone control network between any traditional voicings, enabling you to design your own sound.
For recording purposes, the HT-20RH MkII includes a USB output for easy recording of valve tones and a pro balanced XLR D.I. output for connecting to external devices. The amplifier head also features a unique tilt-back design for easy tone dialing and a compact cabinet with a 3-degree angle on the front face, top-loader panel, and stage-friendly chickenhead knobs, giving it a stunning boutique style.