mute switch - ALPS SPUJ 190900 all other switches of the Quad VI are of this type except the main power switch these little chrome tips are fixed to the switch by using a drop of silicone speaker protection relay - Schrack RP310024 the main power protection uses the same relay effect loop trim pot Piher PT 15 Nh(5) 50k Mid 1 pot Alps RK1K112 50k all other EQ pots are of the same type mono jack socket - Cliff CL1308 you may have to fiddle a little with these cardboard washers to avoid tension to the circuit board when reinstalling the board it Lüfter Sunon KDE2408PTS1-6; 3,4W; 80x80 24V drin Ersatz evtl. Panasonic ASFN84392; (22db) nur 50% Luftdurchsatz Papst 8414 NG - sollte leiser sein, ist aber wesentlich lauter Papst 8414 N Noctua NF A8 PWM - nur 12 Volt - Amazon 16€ - muss mit seperatem netztei angesteuert werden - DC/DC-Wandler Mean Well NSD10-48S12 830 mA - https://www.conrad.de/de/dcdc-wandler-mean-well-nsd10-48s12-830-ma-1292512.html reichelt.de hbe-shop.de farnell.com tubeampdoctor.com Manufacturer: Sunon Fans Part Number: KDE2408PTS1-6 Fan Type: Tubeaxial Size / Dimension: Square - 80mm L x 80mm H x 25.5mm W Voltage - Rated: 24VDC Power (Watts): 3.60W RPM: 3000 RPM Noise: 34 dB(A) Static Pressure: 0.180 in H2O (44.8 Pa) Air Flow: 41.7 CFM (1.18m³/min) Termination: 2 Wire Leads Bearing Type: Sleeve Operating Temperature: 14 ~ 158°F (-10 ~ 70°C) Description: FAN 24VDC 80X25.5MM 41.7CFM