if they're made in China, I'd steer clear of them, cuz the transformers will probably give up in short order. my friend bought one of those and listened to it for a little while, then sold it. his was a push-pull design and it sounded ok but somewhat on the bright side.
Inexpensive Tube Amps
Anyone have any experience with the following? I want to try one just to see how the sound compares to my Yamaha and Denon solid states. Since the Denon is living on borrowed time I will likely have to replace it this year anyway. Looking at the Nubsound and noted a Germtune that is identical to the Nubsound but costs a bit more. Reviews are largely good including those on other forums.
https://www.amazon.com/dp/B00NWISSGU/?coliid=I2VYW63Z6R35ZH&colid=3O2PB0XPYIL0T&psc=0&re...
https://www.amazon.com/Nobsound-Amplifier-Single-Ended-Handcrafted-Headphone/dp/B073ZXZ3Z5/ref=pd_sb...
https://www.amazon.com/dp/B00DRUY6EG/?coliid=I1EPHIQ7T6OOPR&colid=3O2PB0XPYIL0T&psc=0&re...
https://www.amazon.com/dp/B00NWISSGU/?coliid=I2VYW63Z6R35ZH&colid=3O2PB0XPYIL0T&psc=0&re...
https://www.amazon.com/Nobsound-Amplifier-Single-Ended-Handcrafted-Headphone/dp/B073ZXZ3Z5/ref=pd_sb...
https://www.amazon.com/dp/B00DRUY6EG/?coliid=I1EPHIQ7T6OOPR&colid=3O2PB0XPYIL0T&psc=0&re...