Nelson Pass First Watt F4 25W Class A Amplifier, built inside NAD 208 case. Smooth detailed sound not for low efficiency speakers. Like everything else from First Watt the F4 is a unique amplifier. It has no feedback and no voltage gain, only current gain, it will deliver up to 25 watts into 8 ohms and 50 watts into 4 ohms. It is built as dual-mono circuit boards, powered by a 500w toroidal transformer and filtered with 86000uf per channel. It has a soft starter with thermal protection, speaker protection, rhodium plated RCA and banana sockets, input and output wires are silver plated OFC. The combination of a simple Class A circuit operated without feedback and the good objective performance gives us a superb sounding amplifier. The low distortion, bandwidth extension, and high damping results in midrange clarity, treble detail, and control on the bottom end. While these are available from most good solid state amplifiers, the F4 also brings depth, imaging, midrange warmth and top-end sweetness.

First Watt M2 Audiophile Amplifier. Nelson Pass is a genius! I consider his amplifier designs absolutely brilliant. This is the best sounding amplifier Ive ever owned. The M2 is rated at 25w/8 ohms and 50w/4 ohms. This amp produces so much current it even drives my Magnepan LRS! I am the second owner. Unit is maintained in an air-conditioned, pet free environment. Buy with confidence, Ive been a member of the other audiophile site for 20 years. I dont have the original box but will be well packed (see photos). CONUS only.

First Watt F5 (Clone) Class A Amplifier. Up for sale is an amazing Class A amplifier and desired by many. I have built this amplifier out of curiosity as I have been told it is absolutely amazing, and it is, but I still prefer my Aleph . It is built as dual-mono, and each channel it is powered by a 200w toroidal transformer and filtered with 66000uf per rail (264000uf for both channels) CRC filter. It has a soft starter with thermal protection, speaker protection (powered by a 3rd transformer), rhodium plated RCA and banana sockets, input and output wires are silver plated OFC . After 3 hours of use, the heatsinks reached 45 Celsius and the power transformer 49.5 Celsius with a room temperature of 21.5 Celsius. There are some extra holes because I used to have the Aleph 3 (spare unit) installed before Collection only please Any questions please feel free to ask

NELSON PASS FIRST WATT F4POWER AMPLIFIER The First Watt F4 is a classic Nelson Pass/First Watt design with JFET inputs and MOS-FET outputs. However, as with the other FW amps there is a twist here, namely that the F4 has no voltage gain. That means it’s essentially a buffer than can provide a full 25W class A output. its low or no gain so needs a preamp with a decent output Track Page Views WithAuctivas Counter

Nelson Pass First Watt F5 Power Amplifier.. 2nd owner, comes in good condition.