Power Amplifier First Watt SIT-5 Matte Black

13 800,00 € for pair
with VAT 20%

Description

The First Watt SIT-5 is a single-ended Class A stereo power amplifier designed by Nelson Pass, representing the fifth generation of First Watt amplifiers built around Static Induction Transistors (SITs / VFETs). Following the SIT-1, SIT-2, SIT-3, and SIT-4, the SIT-5 utilizes high-power Tokin THF51S Silicon SITs—industrial-grade devices rated at 600V, 30A, and 400W—to deliver 10 watts per channel into a 10-watt amplifier envelope. Operating in a single-stage, zero-feedback Common-Source configuration, the SIT-5 closely emulates the transfer characteristics and dominant second-harmonic spectrum of a single-ended triode (SET) tube amplifier, driving loudspeaker loads directly without requiring an output transformer. By combining massive power handling headroom with tube-like harmonic purity, high bandwidth, and exceptional dynamic control, the SIT-5 provides an ultra-transparent, natural, and fluid listening experience.

Specification

Product code: p3_FRW_AMP_POW
Frequency response 5 Hz až 200 kHz (-3 dB)
Input impedance 100 kΩ
Power consumption 200 Watts
Fuse Typ 3AG pomalá (2,5 A pre 120 V AC / 1,25 A pre 240 V AC)
Gain 19 dB
Noise 30 µV nevážený, 20 Hz – 20 kHz
Distortion @ 1 Watt 0,07 %
Damping Factor 25
Output Power @ 8 Ω 35 Watts @ 1 % THD

First Watt

First Watt: The First Watt Philosophy and Purist Class-A Architecture

First Watt represents a visionary project created in 1998 by legendary audio engineer Nelson Pass, dedicated to exploring the boundaries of purist amplification outside mainstream commercial constraints. The brand is built upon Dick Olsher’s famous statement that "the first watt is the most important watt." If an amplifier fails to deliver texture and natural nuance at one watt, massive output capabilities become irrelevant. First Watt specializes exclusively in low-power Class-A amplifiers rated up to 25 watts, utilizing elegantly simple circuit topologies with minimal or zero global feedback.

By embracing minimal component count and prioritizing the performance of individual active gain devices, First Watt amplifiers deliver extraordinary micro-dynamics, captivating detail, and a fluid naturalness often compared to the finest tube designs, backed by solid-state reliability. Each design released by Nelson Pass represents a distinct sonic approach, incorporating specialized JFET and SIT power transistors or zero-feedback current-source topologes. First Watt amplifiers are engineered specifically for audiophiles utilizing high-efficiency loudspeakers who prioritize subjective musical performance, absolute transparency, and pure emotion over raw power. At Dream Audio, we proudly present these iconic masterpieces of conceptual high-end engineering.

Manufacturer information (GPSR)

Manufacturer

Pass Laboratories

13395 New Airport Road, Ste G Auburn, CA 95602 (530) 878 5350 USA

info@passlabs.com