headphone amplifier or similar required, what to get

[Fermit The Krog and Sexy Sarah]

To be used with a Tag Mclaren AV32R, run alongside a Tag 7 channel amp, and 2x Audiolab 8000m's. The headphones are Sennheiser HD600.

There's no headphone socket on any of these.

What is the best thing I can buy to allow me headphone use?

[Tony1963]

There's a huge choice out there, so the best advice is to go along to a proper hifi shop, with your headphones and some music, and try some out. Be warned, you might also be tempted to upgrade the 'phones!