After having seen too many dud's come from Tube Depot I don't recommnend them. slang

[Alex16]

Контекст:

Вопрос и ответ с hi-end форума по поводу надежных продавцов ламп:

- Where are good places to buy tubes (as far as their matching and so forth?) So far I've only found Upscale Audio, Tube Depot and Antique Electronic Supply.

- After having seen too many dud's come from Tube Depot I don't recommnend them.

Что такое dud's? Подделки?

[_03]

Мне кажется здесь в смысле: бракованная, недоброкачественная продукция

[Alex16]

Ну да. "Подделка" - слишком конкретно.