Black Ice Fusion F100 mono blocks with 6550 tubes (PAIR) (local pick up only)

THE BLACK ICE AUDIO F100s

Each Fusion F100 power amplifier is built around the revolutionary Odyssey Circuit invented by Jim Fosgate and is original and not based on any other design. The Odyssey is a dual-phase V-drive circuit that is one of a kind paired with our custom designed German grain oriented silicon steel core transformer based on the Hafler design. The F100 pumps out 155 WPC with KT88 power tubes, and 175 WPC with the venerable KT170. Using the Exact Biasing Vu meter you always know exactly what your tubes are doing with the turn of a knob which makes tube rolling extremely safe and fast. Assembly and burn in of the F100s are done by hand in our Maryland workshop

Please Note: The F100s can run many power tubes and equivalents when you select from the dropdown you are only choosing the tubes we bundle and burn in with your F35.

Here are the peak power levels with the tubes we offer.

• The Tung Sol 6550 power tubes: 85 WPC. The 6550 is a classic. Extremely smooth and strong mid range. Great soundstage and the most classic sounding of our tubes. It can’t achieve the detail or bass of the KT88. A great smooth and forgiving tube. We are now on our last stock of TunSol 6550s.

• The Mullard KT88(Platinum ReIssue): 85 WPC. The Mullard KT88 is an excellent tube, providing deep bass, with a focus on the midrange, and an excellent soundstage. The Mullard is great at making poor recording sound richer.The Mullard sound tube sounds clean, detailed, fast, with a great and smooth midrange. Great detail and a 3D soundstage. This is our most recommended tube. It works for all types of music and picky speakers.

• The Tung Sol KT170 tubes: 175 WPC. The K170 is the big gun it has massive power and sonic weight. It has excellent detail in the highs but doesn’t quite match the KT77. The KT170 has a weight in the mid range that equals the detail of the KT88 but has more musicality, soulful, and organic feel. The KT170 has the most powerful bass of all the tubes, without sacrificing any detail or becoming muddy. It is an unusual tube because it has power and detail, but is organic and full, it has all of the extended highs and never gets grainy. The KT170 doesn’t share its unique properties with any tube and is something everyone should put into their amplifier at some point..

SIGNATURE SOUND

The signature sound of the F 100 is a fine line of transparency and musicality that results in an accurate, yet organic & natural washing-over effect. Because of this wonderful mix, choosing the right tube will have a major impact on the overall sound of the amplifier. Unlike other manufacturers where the circuits in their equipment require you to use a certain type of tube and brand with their products, the Black Ice Audio amplifiers make it easy for you to roll different types and brands. With the use of the onboard meter and the tuning wand provided with the product, you’re able to bias accordingly. It’s that easy.

AMAZING CONTROL

The Odyssey Circuit gives our pure tube amplifiers the bass performance of solid state. You get all the smooth detail in the highs and 3D holographic mid range of tubes but maintain that tightly controlled bass that solid state amplifiers are known for. No other pure tube amp can compete with our Odyssey Circuit.

LOW NEGATIVE FEEDBACK

We only need 4.5 dB of negative feedback to control any oscillation in our circuit because we only use 2 gain stages in our amplifiers. Less negative feedback means a cleaner signal and better sound reproduction. Typical tube amplifiers can use up to 6 gain stages which add magnitudes of distortion to the signal and need as much as 20dB of negative feedback to control. Negative feedback in amplifiers is like scrubbing a stained white T-Shirt. The darker the stain the harder it is to remove, if you have a light stain(2 gain stages) you can remove all of it easily(4.5 dB). A really dark stain(6 gain stages) and you have to scrub it very hard(20 dB), you won’t totally remove it, and it’s very likely you will damage the fibers of the T-Shirt in the process.

MAXIMUM DYNAMICS and CLASS A CURRENT

We design all of our amplifiers to have full dynamics at low power. Current is what drives speakers! To maximize available current we designed the circuit to exploit the Triode side of the tube with maximum efficiency producing the most Class A current possible before we leverage the Pentode and push/pull for overdrive. Our amplifiers can drive inefficient speakers with ease and our watts per channel rating is not a reflection of our true power.

EXACT TUBE BIASING

Bias our tubes in under 30 seconds with the centralized backlit Vu Meter and the Biasing selector switch which makes checking the bias amperage in real time simple with a turn off the knob. Using the provided tuning wand and the backlit Vu Meter each tube can be biased exactly where you want it. We design our amplifiers to run at the exact setting for the user selected power tubes, we do not feel any auto-bias that operate within a range is superior to the user dialing in the correct setting for the specific tube. We admit that Auto Biasing is a cool tagline, but Black Ice Audio prioritizes audio purity and tube life and Exact Tube Biasing is the only way to achieve that goal without compromise.

PROPRIETARY DESIGNED AND WOUND TRANSFORMERS

Custom designed based on Hafler principles our power transformers are built around a core of German grain oriented silicon steel. They are some of the finest on the market known for being remarkably reliable and silent.

ULTRA FAST CIRCUIT TRACES

We use only two circuit boards: The control board signal/power supply board is integrated to lower the chance for failure and shorten the path for electrons to flow. A shorter path means that there is less opportunity for interference or noise to be introduced into the signal. Superior to P2P design.

RCA and FULL SIZE XLR INPUT

The F100s feature a full size XLR and RCA to connect to your preamplifier.

BRIDGABLE

Using the dedicated XLR Bridge each F100 mono block can be connected to another F100. Increasing the power with each additional F100 added.

SPECIFICATIONS

Maximum Power Output:

• 175 W per channel at 8 ohms, 25Hz to 60KHz with KT170 Tubes

• 155 W per channel at 8 ohms, 25Hz to 60KHz with 6550, KT88 Tubes

• 135 W per channel at 8 ohms, 28Hz to 72KHz with EL34, KT77, 6CA7 Tubes

Continuous Rated Output Power:

• 165 WPC at 8 ohms, 1KHz with KT170 Tubes

• 140 WPC at 8 ohms, 1KHz with 6550, KT88 Tubes

• 120 WPC at 8 ohms, 1KHz with EL34, KT77, 6CA7 Tubes

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

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

Inputs: 1x XLR/RCA shared mono

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: 8 x 6CA7, 6550, KT88, or KT170 power output tubes and 4 x 12AX7A/ECC83 signal tubes.

Power Requirements: 110V-120 VAC 60Hz 6 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: 5 year limited parts and labor. 1 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 Slow Blow; 200 - 240 VAC, 3.15 Amp Slow Blow Size 5mm X 20mm

BLACK ICE AUDIO TECHNOLOGY

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INCLUDED IN THE BOXES

• A pair of F100 Power Amplifiers

• 8 Power Tubes

• 4 Pre-Amp Tubes: 12AX7

• Bias Tuning Wand

• 2 Power Cords

• 2 Dust Cover Bags