The Sennheiser 600—Schiit Valhalla 2 combo is stellar. I also made the JJ Gold replacements, and it transformed the sound into a holographic range. Classic RL-cut Band LPs sound brilliant, as does Kendrick Lamar's latest album. I can't recommend this combination enough. Best, Bill

I just installed a pair of JJ E88CC Golds, as well. I'm stunned how much smoother it sounds. The soundstage is stellar. I'm hearing old LPs like new. I'm sure there are better tubes for more money, but I highly recommend the JJ Golds for those who want a significant sound improvement for a...

I'm really keen on getting one of the Valhalla 2's. I prefer listening to vinyl—not digital. I have a vintage McIntosh MA5100 with a built-in headphone amp, but if I can plug this in to my system with vinyl, I think there's a lot of potential there. I currently have Sennheiser 558's but will...

Dear 'Cans Fans, I'm new to the headphone amps game. I've got a nice one in my McIntosh MA5100, currently driving some modest Sennheiser HD 558's. I've been getting an upgrade itch in the headphone department, and I think I may want a dedicated headphone amp. I have a limited budget. I'm...