SW1X PRE III Tube Amps with the headshell removed by

with the headshell removed by Allen key

The system generates the 580V bias required for Pro Bias electrostatic headphones

The Rex5's five-driver configuration gives it greater authority and separation across the frequency range than most TWS earphones

Sennheiser's upper-tier in-ear monitor

SW1X PRE III Tube Amps with the headshell removed byThe SW1X PRE III is a pure Class A, zero negative feedback line preamplifier with a signal output transformer coupled EL84 valve output stage, the more refined and transparent sibling to the PRE II, delivering a near zero 4 ohm output impedance and the tonal purity, scale, and dynamic authority that only a transformer coupled power valve output stage can provide. Available in four transformer quality levels from Standard to Signature. Type and