The Design Challenge:  Build a stereo tube amplifier with a sound quality that equals or exceeds the best in high end audio equipment.  Included were two major criteria, make sure designs are reliable and can be sold at value prices.  The Engineering Result:  An integrated stereo tube amplifier that can be hooked up directly to a DAC or CD player and two speakers.  The Sound:  High end audio tube performance at a value price.

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

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

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:                   600mV at 1KHz for 60 watt output

Output Impedance:               4 ohms and 8 ohms

Negative Feedback:               Less than 5 dB

Noise and Hum:                    85dB below rated output

Tube Complement:               2 matched pairs (4) of  6550/KT88 power output; 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:                                   39 pounds (18 Kg) net, approximately 46 pounds (21 Kg) packaged

Warranty:                               Two year limited parts and labor. One year or 1000 hours whichever  comes first on Jolida Tubes.                                                              

Bias Settings:                        500 millivolts + 50 mV

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 Fully Integrated Stereo Amplifier: Input 600mV driving 60 watts, maximum 85 watts output. 

o Multiple Inputs: Front mounted selector switch-CD, DVD, Tuner and Aux. (for TV, VCR or   

   Computer plus a Bypass function which gives you the ability to use the unit as a power amp.

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 EZ Biasing: Biasing made simple. Turn the screw until the light goes on, the tube is biased.

o Remote Control: Standby, volume and mute

o State of the Art Components: ALPS audio potentiometer, gold plated RCA input jacks.

o Low Feedback Design: Only 5 dB                   

o Comes in Black or Silver

Warranty:   Two year limited parts and labor. One year or 1000 hours whichever comes first on Jolida Tubes.   

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