Sennheiser HD 280 PRO Headphones 5-channel The C01's design includes a

The C01's design includes a heavy gauge mesh grill

It's compatible with F31

Built-In LCD with Spin Knob Control

The Quik-Lok BX-8 Height Adjustable Small Bench with Thick Cushion provides comfortable seating with three adjustable heights

Preamp valves: 4 x ECC83

Sennheiser HD 280 PRO Headphones 5-channel The C01's design includes aThe HD 280 Pro is Sennheiser's most significant closed, around the ear headphone to be introduced in years. Designed to exceed the demands of the professional environment, the HD 280 Pro boasts extremely robust construction combined with the sound quality, modular design and aggressive noise isolation that is necessary in the field. The unique collapsible design, combined with swiveling ear cups, offers maximum flexibility in any application.