Parts Express 10W Corded Electric Speaker Line Matching Transformer, 3.0 amps, 100 Hz - 12 kHz, 300-040, 0.88 lbs

Good quality and work great.

It work great and well marked.

Ordered 2 of these. They came in small boxes with no packing material so all four mounting tabs were badly bent. They're thin and easily bent back, no big deal. The real trouble can be seen in the pic. The transformer on the left has 2 wires coming from the same position next to an empty spot where there should be a wire but isn't, and the one on the right has the wire label put on backwards! They are both installed and working now, but it was a pain to figure out how to get here. Compare what you get to the images in the ad; if they don't match use the images as a wiring guide. Inspect these transformers! The manufacturer clearly doesn't!

I use these transformers as audio outputs for 3 to 6 watt tube amps. These transformers allow a great tone and the range of primaries give me an opportunity to experiment. Orange (around 35:1) or Brown (around 30:1) are the main leads I use. This transformer easily handles 360VDC @50mA.Started using these to match 12AT7 half to 2BF2 or 2BF3 Accutronics mini spring reverb. Blue Black to Grey Black about 10:1.

These little transformers were paired with the Pyle Home PCA4 Mini 2x120 Watt Stereo Power Amplifier without any problems. I was able to match to 4 70V speakers with different impedance. The amp could not handle higher wattage transformers had to move to this lower watt option but the output was not a problem had great volume for each room. It you are looking for booming sound do not use the little amp. I paired this with a line level volume control and had to turn the amp volume to less than 50% to not overdrive but it sounds good using an iPod or other mp3 source.

Items worked perfectly. Very economical.

It's a transformer and it works. Not much to say.

perfect match