Coppia valvole PX25 Full Music matched nuove

Descrizione

Vendo coppia di rare e prestigiose valvole PX25/n FULL MUSIC matched (accoppiate) nuove. Universalmente riconosciute come le valvole di potenza più musicali in assoluto non sono mai state utilizzate e sono state sempre mantenute in ambiente protetto. Utilizzabili sul mio integrato "The Incantation of PX25" di noto progettista italiano e commercializzato sotto il marchio "The Sound of The Valve" di Stefano Zaini, organizzatore delle Fiere dell'HighEnd di Roma e Milano. Limiting Operation Conditions for Safe Operation-nor simultaneous ratings: Maximum plate voltage : 500 volts - Maximum plate dissipation: 30 watts. Classification: Dome-type bulb of glass, a white ceramic base with four-prong bayonet gold pins, oxide coated filamentary, mesh plate triode. Application: Audio frequency amplifier where power outputs of approximately 10 watts or less is required at relatively low plate voltages. Nominal operating conditions and parameters: Filament voltage 40 V or50 V* - Nominal filament current: 2 A or 16 A - Plate voltage: 400 V - Grid voltage: -30V** - Plate current: 625 mA - Impedance***: 1265 ohms - Amplification factor***: 95 - Mutual Conductance***: 75 mA/V - Grid current: 005?A - *Alternating-current filament supply or Direct-current filament supply **Alternating-current filament supply is used The grid and plate returns should be connected to a center tap on the secondary of the filament transformer ***Direct-current filament supply is used The grid and plate returns are connected to the negative end of the filament - *Measured at Va=100;Vg=0