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First Watt F4 Stereo Power Amplifier; Nelson Pass
Product: First Watt F4 Stereo Power Amplifier; Nelson Pass
Product SKU: 12858
Serial Number: 616
Voltage: 120V
Cosmetic Description: 8/10 Excellent condition with minimal visible cosmetic wear including a few very minuscule nicks on the top surface of the case. Outstanding condition overall - the condition will please even the most discerning audiophile.
What is Included: Power amplifier, power cable
Functional Notes: Operational condition of this item is excellent, fully tested and no issues found.
Age: 2 years
# of Owners: 1
Tobacco Exposure: No
Service History: None
MSRP: $2500
Other Notes: "Like everything else from First Watt the F4 is a unique amplifier. It has no feedback and no voltage gain, only current gain. This design is sometimes called an “impedance converting amplifier”, but more commonly referred to as a buffer – in this case, a power buffer.
The F4 is Class A impedance converting amplifier, having no voltage gain or feedback. Its input impedance is 47,000 ohms, and its output impedance is about 0.2 ohms. It is suitable for driving a high sensitivity loudspeaker with the output voltage of a preamp or other line-level audio source. It is also useful with a less sensitive loudspeaker in a bi-amped configuration where it takes input from the output of a conventional amplifier.
As a stereo amplifier with single-ended inputs and outputs, it will deliver up to 25 watts into 8 ohms with a damping factor of 40. It will do 50 watts into 4 ohms, and as a mono-block amplifier with parallel inputs and outputs, it will do about 100 watts into 2 ohms. As a mono-block amplifier with balanced inputs and outputs the power output rating is 100 watts into 8 ohms at 1%."
Reviews: 6 Moons
Shipping: Cost to ship this item within the contiguous United States is a flat rate of $37- including packaging and insurance. For all other locations including Hawaii, Puerto Rico and Alaska, please request a quote prior to purchase. Items with factory packaging will be double boxed. When factory packaging not available re-usable shipping box with custom injected-foam mold will be used. (for all items over 10 lbs). Note that all items valued over $500 will require a signature upon delivery.