Since the DSHA-1 and L-2 are very limited and in demand, I think you can expect to pay close to original MSRP or higher if you can find them. If they are on the same level as my Black Diamond, I would say they are worth it. Then again, you might just try the Black Diamond. It is one of the best amps I have heard regardless of price. Certain amps have their niche, but I have to say the Black Diamond is the most universal amp I have been able to listen to. It sounds great with my HD800's, HE-500's, HE-560's, and the AKG K812's. I also own RS1's, PS1000's, and T1's, but I don't like those cans as well. To people who prefer the sound sigs of the latter cans, it might be a good match for them as well. I just don't really care for them, so I haven't tried them with the Black Diamond.