Fusion 3502P

Fusion 3502P

Vacuum Tube Power Amplifier

Technical Specifications Fusion 3502 P

Maximum Power Output:    85 W per channel at 8 ohms,  1KHz with 6550 Tubes

75 W per channel at 8 ohms,  1KHz with EL34 Tubes

Rated Output Power:           60 W per channel at 8 ohms, 25Hz to 60KHz with 6550 Tubes

50 W per channel at 8 ohms, 28Hz to 72KHz with EL 34 Tubes

Frequency Response:          (at 1 watt into 8 ohms) 8Hz to 130KHz   + 1dB

Bandwidth:                            15Hz to 80KHz + 3dB; 0dB 60 W 1KHz

Distortion THD:                    Less than 1% at 20 V output, 28Hz to 15KHz

Circuit Type:                         Ultra Linear, Class AB

Input Impedance:                  100Kohms

Input Sensitivity:                   2 V at 1KHz for 60 or 50 watt output

Output Impedance:               4 ohms and 8 ohms

Negative Feedback:               Less than 5 dB

Noise and Hum:                    90dB below rated output

Tube Complement:               4 pieces of 6550/KT88 or 4 pieces of EL34 power outputTubes; 2 pcs. 12AX7A/ECC83  pre-amplifier; 2 pcs. 12AT7/ECC81 power drivers.

Power Requirements:          110V-120 VAC 60Hz 180 watts-standby, 450 watts maximum (220 VAC 50Hz option)

Dimensions:                          17 inches (43cm) wide by 15 inches (38cm) deep by 7.5 inches (19 cm) high

Weight:                                   50 pounds (18 Kg) net, approximately 55 pounds (21 Kg) packaged

Warranty:                               Two year limited parts and labor. One year or 3000 hours whichever comes first on Tubes.                                                                        

Bias Settings:                        500 millivolts + 50 mV for 6550s, or 400 millivolts + 40 mV for EL34s

Fuse:                                      110 - 120 VAC, 6.3 Amp slo blo; 200 - 240 VAC, 3 Amp slo blo

                                                Size 5mm X 20mm

Construction Details and Features:  

o Stereo Power Amplifier: Input 2 V driving 60 watts (6550 tubes) or 50 watts (EL34 tubes) output, maximum 90 watts (6550 tubes) or 80 watts (El34 tubes) output.  

o Multiple Inputs: RCA and XLR inputs.

o Custom Wound Audio Transformers with a core of German grain oriented silicon steel. 15th generation proprietary design.  Secondary can be configured for a 4 ohm or 8 ohm load.

o Top panel bias testing terminal with bias adjustment controls plus EZ-biasing.    

o State of the Art Components: Hexfred Diodes, carbon composite grid resistors, custom  coupling cap., Alps blue potentiometer.

o Low Feedback Design: Only 3 dB

  • AXPONA 2017 Gold Award
Client Testimonials
  • There is tight and nice lower bass that adds to the bass excitement. The mids are lush and transparent. The highs are extended without being etchy. There is nice air around the instruments. This is a warm sounding tube amp without any tube veiling.

    Consumer Review
    Jolida FX 10 Integrated Tube Amp
  • JoLida made its name with what used to be called "popular priced" tubed electronics that offered exceptional value-for-dollar.

    The Audio Beat
    Consumer Blog