Very happy about this products performance. It really has enhanced the sound quality of my hifi amplifier Cayin HA 3A) more than I thought it would. Service, packaging and delivery have all been great! The only unfortunate part was it incurred a custom charge into the UK.

After a few weeks of searching for the perfect pair of 12AX7 and 12AU7 tubes, I stubbled upon Soundlumia. Seeing that they stocked many sets of of NOS tubes, I put in a request for some additional pairing information. Frank was quick to respond and promptly setup a call to discuss all of my options. He presented me with several pairs and discussed the variances between them all. In the end I was able to purchase a few matched sets that met my preamp, amplifier and DAC needs. I couldn't be happier with the upgrades. I will definitely be back for the more! Thank you!