Any experience of op-amp kits via eBay (HK and China sourced)


Active Member
I'm looking for a Pre-amplifier; simple requirements -

Remotely-controlled volume
Three, Four or Five analogue inputs
er... that's it.

There's lots of listings on eBay which seem to consist of 2 or 3 amplifier kit modules, with a credit-card size remote. Even the ones being sold by UK sellers have reprinted the pigeon Engrish of the maker's blurb;

Example 1

" - PGA2311U On Control precision: is more than 100 times the mechanical potentiometer

- On Sound: it is the top product, without any distortion of the switch

- Distortion under PPM

- This circuit is intelligent, will not start the PGA2311U inside amplifier when being lower than 0DB,Only start internal resistance of array control volume, can connect other preamplifier, then it is only used as a potentiometer

- The remote equivalent to > 0DB, make its internal super amplifier PGA2311U start automatically,31DB maximum

- Encoder with input selector switch, press encoder switch can switch input signal (three road input DVD CD DRE"

Example 2

Has anyone had any experience of these, and could comment on sound quality?

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