4 pin, UX4 valve bases

Valve bases that fit 4 pin, UX4 valves such as the famous 300B and 2A3 valve.

UX4, 4 pin chassis mount valve base from Audio Note, mounting is from below chassis. Cutout is 30mm diameter, with M3 fixing holes centres 41mm apart…
UX4 chassis mount. The best UX4 base around, boasts silver plated pins. Same dimensioning as the SK4X40, superb upgrade.
Black bakelite UX4 chassis mount valve base from CMC. Gold plated OFC plated contact. Tight contacts. Can be mounted from above or below. 27mm…
Super high quality teflon UX4 chassis mount valve base from CMC. Gold plated OFC plated contact. Tight contacts. Can be mounted from above or below.…

UX4, 4 pin chassis mount valve base, mounting is from below chassis. The cutout is 30mm diameter, with M3 fixing holes centres 41mm apart.…

UX4 chassis mount, nickel plated connections and pins. Highly glazed white ceramic. Sold individually. Gold plated pin type also available.

UX4, 4 pin chassis mount valve base, mounting is from below chassis. The cutout is 30mm diameter, with M3 fixing holes centres 41mm apart. Gold…

UX4 chassis mount, gold plated pins. Highly glazed white ceramic. Sold individually. The nickel plated version is also available.
UX4 ceramic chassis mount valve base. Highly glazed white ceramic, with protective shield. Sold individually. Gold plated pin version also available.
UX4 chassis mount, gold plated valve base. Highly glazed white ceramic, with protective shield. Sold individually. The nickel version is also…

The perfect solution for mounting a stand alone octal or UX4 base valve in an enclosed chassis, providing links to the underside pins without…

Off white ceramic UX4 chassis mount valve base from CMC. Gold plated OFC plated contact. Tight contacts. Can be mounted from above or below. 27mm…
Teflon bodied UX4 valve base. Can be mounted above or below chassis. Gold plated oxygen free copper contacts. 3.5mm diameter mounting holes, 43.5mm…

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