hi i am finally selling my beautiful old bell labs stereophonic 3030. it is fully functional and the tubes tested strong and it sounds awesome with smaller or higher efficiency speakers (i ran it with tannoy 6.5" concentric monitors and never had a problem). the tube compliment is 5 x 12ax7a (4 are nos telefunken 1 is a mesa boogie) 4 x 6v6gts (all four are are original rcas). all functions work and i variac'd it to bring it up to normal voltage after it had sat for a number of years. this is a 2 owner unit and the first owner bought it new and never listened to anything but classical at low volumes. like any tube amp it will probably need a recap eventually but that is to be expected with any tube amp. as far as functions inputs go it has riaa and euro lp inputs, tape head input, tuner (with level adjustment) and auxiliary inputs. it has a 2 band defeatable noise filter, a 2 part volume control (loudness and level) and a 2 band equalizer. it is switchable mono/stereo and has 4/8/16 ohm taps. this is a great sounding box very warm and balanced. if you have any more questions just ask. one more thing the only trades i am looking for are high end full size headphones and a tube or hybrid headphone amp slash usb dac