New Old Stock / Old Stock

Browse new old stock (NOS) and old-stock valve listings from Glass Audio in Pretoria, South Africa. This category contains both conditions: inclusion here does not mean every item is unused. Check the condition stated on the individual product page and ask about any uncertainty before ordering.

NOS means unused older stock. OS means old stock and does not, by itself, establish unused history. A brand label, original box or historical specification is not an individual test result or a promise of remaining life. Glass Audio tests valves before sale; not every valve held in stock has already been tested. Matching and selection claims require item-specific confirmation.

Read our NOS, old stock, testing and matching guide and use the datasheet library for model-specific references. A similar base or listed cross-reference does not establish interchangeability.

Some items are enquiry-only and have no listed price. Contact Glass Audio with the item name and quantity for a quotation and condition details. Pretoria collection is by arrangement, Monday to Saturday, 08:00–17:00. International postage is calculated before quotation.