The LT-ECHO 10 is the practice amp, packing all the great tone and innovative features you would expect from a Blackstar. The patented ISF (Infinite Shape Feature) circuit gives you infinite adjustment over the characteristics of the tone control network and takes you from the USA to the UK and anywhere in between. So now you can effectively design your own tone and finally find ‘the sound in your head’. The LT-ECHO 10 also has a fully specified speaker emulated output allowing any guitarist to get amazing tone straight to tape or disk, or through headphones. Add to this an MP3 / Line Input, allowing you to jam along to your favourite tracks, you have everything you need for practising or recording. This controls the amount of time and feedback on the DELAY. Turn the knob clockwise to increase the time and feedback for a spacious large room feel, and counter-clockwise to decrease the time and feedback for a more slap-back type effect.