So after I decided not to sell the amp and understand how it works such beast with such headphones as the D8000 Pro, I am really enjoying this HA-6A and stopped using the Kinki THR-1
I have tried different rectifier, preamp and power valves and I think the stock valves are amazing pairing for D8000 Pro, got new EH 12au7 and there's no hiss anymore, there's a very very low hum that I can only notice if I focus on it
The Psvane KT88 MK2 gives a really accurate and tight sound but they remind me of SS too much while GL KT88 with EH 12au7 gives that very slight tubey sound and a bit of warm that really enhances the missing bass from D8000 Pro making it extremely enjoyable where everything sounds incredibly amazing
I also tried RCA Radiotron 12au7 and they give a very big soundstage bringing the midrange back while having a very controlled bass and kind of bright treble
For 22de4 rectifier I tried Sicte Pavia but I can't find much difference with the RCA, I guess these valves have a job that won't make music sound different at all
I have 2 Ruby KT88 incoming to compare with the GL's but so far, I think stock valves with this amp are already an amazing set and you pretty much don't need to buy more valves, only replacements, unless you go for NOS
Hi everyone. I’ve been trying to decide between the Felike Euforia and the Cayin, and I think I’ve made up my mind!
Can I check what are the recommended tubes to get for my 800S? I don’t mind rolling a couple of tubes to find my preferred sound. But not blindly buying every single tube out there either
Also, has anyone ventured to try the IE900 out of the HA-6A?
I had the Elise and I would always choose the HA-6A
Edit: Question for tube amp experts, when I was trying to find what could make the hum I removed the 12au7 valves like Midfi Guy did and the hum was present without them, I guess it is just the output power with my sensitive HP, my connection is RCA+SE low impedance