The original F5 amplifier was a commercial product made by First Watt in 2008, and like other FW projects, in a limited quantity. Also like other FW amplifiers it was relatively low power Class A, emphasizing simplicity and sonic quality.

Features:

• Simpler design to the original F5, without compromising the qualities which made the original popular.
• Input impedance: 47k Ohm
• Damping factor: ~50

A special and limited edition 4U400 chassis is available for pre-order now that will be suitable for this and many other projects. A range of 3U, 4U and 5U deluxe-style chassis with UMS are in the works to suit this amplifier, and expected to be available in late June.