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Pass Labs XS 300
Pass Labs XS 300
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Posted On 25.09.2026
Last Update On 25.09.2026 Pass Labs XS 300
Pass Labs XS 300 Pass Labs XS 300 Pass Labs XS 300 Pass Labs XS 300 Pass Labs XS 300 Pass Labs XS 300 Pass Labs XS 300
Description Original Description is in English, other language texts are translations and can contain errors. EnglishDeutschSpanishTurkish Pass Labs XS 300 monoblock amplifiers—flagship models, 4-chassis design (2 per channel), in perfect condition, single-owner, with original packaging and manual; silver finish.

2016 model; currently in production with a list price of €133,000 per pair. Electrically flawless, tested and verified by our laboratory.

Designed by Nelson Pass and Wayne Colburn without budget or size constraints, they represent the pinnacle of pure Class A solid-state amplification technology.

Architecture and Topology

4-Chassis Configuration: A complete Pass XS 300 stereo system consists of 4 separate chassis. Each monoblock channel utilizes two distinct modules connected via high-current umbilical cables:

Power Supply Chassis: Houses oversized toroidal transformers and dedicated capacitor banks for filtering, isolating mains noise and magnetic fields from the signal circuitry.

Gain/Output Chassis: Contains the input stage and the thermally and electrically isolated power transistor banks.

High-Power Pure Class A: Capable of delivering 300 Watts continuous power into 8 Ohms and 600 Watts into 4 Ohms, remaining constantly biased in Class A without ever switching to Class AB.

Low-Feedback Topology: Employs single-stage gain circuits with minimal global feedback, preserving the harmonic integrity of the original signal.

Inputs: 1x Balanced XLR, 1x Unbalanced RCA

Dimensions (each chassis): 48.3 cm (W) x 69.8 cm (D) x 28.0 cm (H)
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