Continued...
Expect to pay around $500 for a used WA6 1st gen. (The newer 2nd gen. will not accept 6SN7's even with the necessary adapters. But you may be fine anyway.) You will need around $200 plus, for the adapters and tube upgrades. One nice thing about the well reviewed WA6 is that it will work with both low & high impedance headphones.
Expect to pay around $500 for a used WA6 1st gen. (The newer 2nd gen. will not accept 6SN7's even with the necessary adapters. But you may be fine anyway.) You will need around $200 plus, for the adapters and tube upgrades. One nice thing about the well reviewed WA6 is that it will work with both low & high impedance headphones.