Black Ice Audio Fusion F100 Mono Amplifiers



The new Black Ice Audio F100 is a state-of-the-art mono tube power amplifier sporting a new breakthrough circuit design by Jim Fosgate – that includes a touch sensor, LEDs, and a look that wants attention.

  • 120/140/150 Watt Mono Block Amplifier
  • Odyssey Circuit with EL34s, 6550s or KT150s
  • Touch Sensor Interface
  • Bridgeable
  • Hafler Design Output Transformers

Out of stock

The dual chassis design is laced with carbon fiber and mirror-finished glass panels decked out with a LED back lit touch sensor, that provide a rigid home for the one of the newest circuits to date.

The Odyssey Circuit, designed in 2015, is a dual phase V drive circuit. With El34 power tubes, it pumps out 120 watts of pure tube magic. Silky smooth and emotional, the days of the smoke filled, low light jazz clubs are making a come back.

Using the Exact Biasing Vu meter, changing over to the 6550/KT88 power tubes is a breeze and the F100 becomes 140 watts of dynamic force to rock any room.

When it’s time to kick it up a notch, the F100 can be bridge with another F100 to double the wattage and experience music at concert level.

These are a balanced design done by Jim Fosgate. They will be offered with three tube types and run from 120 (EL34) watts to 140 watts (6550) to 150 watts (KT150). They can be run in mono to double their power. Pricing below is for the pair, black or silver.

$6,495.00 with EL34 tubes (120 watts per channel)
$6,749.00 with 6550 tubes (140 watts per channel)
$7195.00 with KT150 tubes (150 watts per channel)

Construction Details & Features

  • Features: Uses EL34, 6550 or KT150 tubes. Can be easily bridged with two cables. and touch sensor on/off switch.
  • Custom Wound Audio Transformers with a core of German grain oriented silicon steel. The output transformers are based on the Hafler design.
  • Exact Bias System: Top panel bias testing terminal with bias adjustment controls and built in meter.
  • State of the Art Components: Gold plated RCA input jacks, Black Ice Audio coupling caps.
  • Low Feedback Design: Only 4.5 dB


Rated Output Power: 120 W per channel at 8 ohms, 28Hz to 72KHz with EL34 Tubes

140 W per channel at 8 ohms, 25Hz to 60KHz with 6550 Tubes

150 W per channel at 8 ohms, 25Hz to 60KHz with KT150 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: Fully Balanced differential push pull
Input Impedance: 100Kohms
Input Sensitivity: 1V at 1KHz for 120/140 watt output
Output Impedance: 4 ohms and 8 ohms
Negative Feedback: Less than 4.5 dB
Noise and Hum: 95dB below rated output
Tube Complement: 4 pcs. EL34 or 6550 power output; 4 pcs. 12AX7A/ECC83
Power Requirements: 110V-120 VAC 60Hz 1 watts-standby, 450 watts maximum (220 VAC 50Hz option)
Dimensions: 13.5 inches (34cm) wide by 15.5 inches (40cm) deep by 8.75 inches (22 cm) high
Weight: 41 pounds (22 Kg) net, approximately 48.5 pounds (27 Kg) packaged
Warranty: Three year limited parts and labor. One year or 1000 hours whichever comes first on Black Ice Audio Tubes.
Bias Settings: 40 milliamps + 5 mA for EL 34s, 50 milliamps + 5 mA for 6550s
Fuse: 110 – 120 VAC, 6.3 Amp slo Blo; 200 – 240 VAC, 3.15 Amp slo Blo Size 5mm X 20mm

Black Ice Audio is the new name for Jolida.

With final assembly performed in the US and critical parts like transformers sourced from Germany, tube manufacturer Black Ice Audio, formerly Jolida, has garnered an enviable reputation for high-performance products at real-world prices.

Black Ice Audio is a collaboration of Jim Fosgate, Jerred Dunkerson, & the Black Ice Audio team who design, engineer & manufacture hifi products – Engineered for Everyone.

Our relationship with Jim Fosgate started in 2010. During this time we have gone from manufacturing his designs for other brands – to working side by side developing and manufacturing under our own brand.

The collaboration has inspired a new approach to audio engineering – circuit wizard meets innovative engineering – resulting in revolutionary advances in hifi valve technology and spatial audio circuitry.

Our common philosophy and goal is to make elite hifi audio accessible to as many people as possible by offering the highest value in the industry. So whether you are new to HiFi gear and tubes, or a seasoned audiophile who knows their circuitry and components – our products are engineered to provide an exceptional listening experience… Thus our brand statement: