First Watt SIT4

Description

FIRST WATT SIT4 - SILVER or BLACK MSRP $5,000 Brand new sealed in box - Shipped directly from Pass Labs! Fly Hifi Stereo is First Watt/Pass Labs' hometown dealer here in Auburn California. Feel free to call the shop with any questions or special requests. The SIT-4 is the most recent amplifier produced by First Watt, and is the fourth to use Static Induction Transistors (SIT) as the power amplifying device. In 2011 we introduced our first SIT amplifier using a custom Silicon Carbide (SiC) transistor part made by SemiSouth. The amplifier used a single power device, operating without feedback in single-ended Class A “Common-Source” mode to deliver 10 watts of power emulating the characteristic of a Triode, but operating at voltage and currents directly needed by loudspeakers, eliminating the output transformer. Do simple SIT amplifiers sound the same as single-ended Triodes (SETs)? Maybe not – it would be a matter of opinion. Without an output transformer with its significant limitations, the SIT has a bandwidth and distortion edge. I suppose if it glowed as well, it might be perfect ;) Summary of the nominal specifications: Measured at 120 V AC and an 8 ohm load: Distortion @ 1 watt 0.6% Input Impedance 100 Kohm Gain 20 dB Output Impedance 4 ohms Output power 10 watts @ 2% THD, 8 ohms Frequency response 4 Hz to 80 Khz (-3 dB) Noise 75 uV unweighted, 20-20 KHz Power consumption 200 watts Weight 32 lbs Dimensions 17” W x 15” D x 5” H Warranty: Parts and labor for 3 years, not covering shipping costs or consequential damages. Warranty work is provided by authorized distributors outside of the U.S. And by First Watt within the U.S. Amplifiers under warranty outside of the U.S. not purchased from an authorized distributor can be serviced in the U.S. by First Watt at the cost of freight and customs charges. FREE SHIPPING WITHIN THE LOWER 48! PLEASE NOTE - ALL PASS LABS AND FIRST WATT UNITS ARE BUILT TO ORDER! PLEASE ALLOW FOR BUILD TIME PRIOR TO SHIPMENT. FEEL FREE TO REACH OUT FOR BUILD TIME ESTIMATES PRIOR TO PURCHASE. INTERNATIONAL BUYERS - PLEASE CALL OR MESSAGE. The item is also available for pickup at Fly Hifi Stereo Store in Auburn CA.

Condition notes

Brand New

year

2026