Check out what Harmony Central has to say:

The stadium-ready,high-power stereo Flextone II HD delivers the power and feel of two 100 Watt
tube heads. Designed to deliver great tone in the studio or on stage,the Flextone II HD features
32 Amp Models,16 Cabinet Models and 16 digital effect combinations that can be used as is,or
mixed and matched to create custom sounds. Four programmable channels are standard —
adding the optional Line 6 Floor Board expands this to 36 channels.

The Flextone II HD provides an unmatched collection of amp tones:harmonic-rich British
distortion,big bold Class A spank,and sparkling American clean tones — plus Line 6 original
tones,along with 16 Digital Effect combinations including Choruses, Flangers, Rotary Speaker,
Delay, Reverb,Tremolo and Compressor — and a series/parallel switchable effects loop.

Unique Dual Mode D.I.s give you great tone direct in the studio or
on stage. Studio mode provides XLR Direct Outs with A.I.R — Line 6 ’s
proprietary technique for simulating the complex
interaction of mics and speaker cabinets. Live mode provides awesome on-stage sound
simultaneous with mike level stereo XLR outputs with ground lift and specially-voiced speaker
simulation optimized to feed the house mixer or P.A.

Optional 4x12 slant and straight cab configurations add up to a full stack that measures up to any
performance requirements — and complete compatibility among all of the amps in the Flextone II
Series. And ToneTransfer ™ compatibility with Line 6 ’s POD and POD Pro allows sounds to be
ported easily from rehearsal to studio to stage and new sounds to be acquired through the Line 6
ToneTransfer Web Library.