• 20 Watt tube combo 2xECC83, 2xEL34 Two footswitchable channels 12" Celestion speaker Enhanced tone controls

• Patent-Applied-For Infinite Shape Feature (ISF) Master volume Digital reverb Speaker emulated output

• Effects loop One-way footswitch included Cool vintage styling

The HT Studio 20 combo is the big brother of BlackStars critically acclaimed HT-5 and offers huge versatility for home, rehearsal or studio use. The carefully voiced preamp coupled with a cathode-biased EL34 power amp, provides the user with the ability to create wonderfully lush valve tones through the 12 Celestion speaker. The HT Studio 20s flexible two channel design features the unique ISF (Infinite Shape Feature) control and although it has a comprehensive control set, it is still simple and intuitive to use.The Clean Channel provides a wide range of clean and moderately overdriven tones. The voicing is typical of many boutique style amplifiers with a ringing Class A type performance. The overall character may be adjusted with the Tone control from dark and warm through to bright and sparkling.The HT Studio 20 Overdrive Channel is characterized by a tone, which is high in gain, but lacks any of the detached top-end fizz often found in many similar designs. This is a result of unique preamplifier and power amplifier shaping techniques, which also benefit the player in the way the overdrive, cleans up beautifully as the guitar volume is reduced. Even at the most extreme settings, the Overdrive Channel remains natural sounding.The HT Studio 20 Overdrive Channel also has its own highly flexible EQ section providing a variety of overdriven tones. The Patent-Applied-For ISF (Infinite Shape Feature) control is unique to Blackstar Amplification and represents a major step forward in tone shaping flexibility. The ISF control shifts the response of the three-control tone stack between a US type response at one end, and at the other a UK type response. Importantly, in between the two extremes, lie an infinite number of alternative tone choices that would be otherwise unavailable.The HT Studio 20s two-channel design has been optimized for either preamp or power amp overdrive, or a combination of both. The carefully voiced preamp and cathode biased dual EL34 power amp ...