⭕ This is my extremely rare Pink Triangle Integral stereo amplifier that is one of the best sounding transistor amps that I have ever heard. This amplifier although transistor based still holds its own when compared some costly nearly £20,000 valve amps and I know because it was tested in my own systems which included Audio Note amplifier, Border Patrol amplifier and Living Voice Argento amplifier as well as Audio Innovations 2nd Audio amplifiers so based upon actual listening tests and not word of mouth. This unit has the protection circuit that is reputed to be missing in the previous versions and serial number is INTV2004 so it might be the last of the series and only 12 were to been built in total it is rumored so this is very very rare and doubt that you will find a lovely working unit of this specification. The remote control is included along with box.