After trying several other pre-amp tube brands/types, I prefer the Sovtek 12AX7WA for my Fender Hot Rod Deluxe Amp. Although it doesn't have as much gain/highs as some others, it gives me the best sound that I prefer. It is exactly the same tube as the original/OEM tube that this amp came with (without the "Fender" logo). I personally think Fender knew what they were doing when they used this tube. If you want the "original" sound from your HR Deluxe, use this tube.