6С33с tube power amplifier, single ended  mono amplifiers

The listing is for a pair of 6С33с tube single ended tube mono amplifiers. Very sophisticated and unique. Great sounding!!! Made in Yugoslavia than upgraded by fifth-element.de Germany This amplifier used as demo for testing expensive acoustic systems in Hi-end shop in Germany each monoblock has input tube: ECC83(12AX7) Driver tube: 6C19П(6S19P) Output tube: 6C33C (6S33S) this amp is unique for the possibilities to bias of any tube for its best performance. So each mono block could be adjusted for best sound of 6C33C with a current from 100 to 500 mili Amperes instructions for amplifiers (monoblocks) on 6S33S look at the amplifier in the face from left to right 1 left black switch is to turn on the amplifier 2 the second switch (to the right of the main switch) shiny with a long beak is the inclusion of an anode (high voltage) 3 lamp current switch zero position beak up – monitor off position 1 (one click clockwise to the right) – the monitor is lit and shows the lamp current 6C33C the current regulator is on the side (the current must be set to 0.15 according to the luminous monitor) position 2 (two clicks clockwise to the right) is to adjust the current of the input lamp (it is closer to the front panel on the right) to adjust the current with the knob closest to the monitor (on the right) put this knob in the middle position (this is 5 turns to the right or left = this is a 10 turn resistor) position 3 (three clicks clockwise to the right) is the current adjustment of the driver lamp, it is located behind the input lamp, the adjustment knob is next to the input lamp adjustment knob (in other words, the second to the right of the monitor) inclusion order 1. put the 6S33s lamp current adjustment knob (it is on the side of the amplifier) in the middle position (that is, either 5 turns to the left or 5 turns to the right), this resistor has 10 turns 2. turn on the amplifier with the left switch and warm up the amplifier for 3 minutes 3. turn on the anode voltage with a shiny switch with a long beak 4. turn the lamp current adjustment switch to position 1 = this will be the lamp adjustment 6C33C look at the monitor and wait for 20 minutes until the amplifier warms up. the monitor reading should be 0.18-0.20 when the amplifier is warm 5. The monitor can be turned off by clicking the lamp current switch to the zero position (anti-clockwise until it stops) 6. you can turn on the music and turn the input lamp current regulator by ear, whichever you like best 6 the same with adjusting the current of the driver lamp – also by ear the main thing is to ensure that the lamp current 6S33S does not exceed the readings of 0.5 and higher Shipped with FedEx Ground or FedEx Home Delivery.