Acoustical tile - A porous architectural material, usually constructed from fiberglass or pressed board, which is most absorptive at the high frequencies.

I recently replaced the acoustic treatment with some new acoustic tiles in my home soundroom.
These are strategically placed such as first points of reflection, etc also four centred on the main oposing wall followed by a line either side along the centre at evenly spaced intervals, also some corner bass traps.

This will be my first pro level channel strip. I'm looking for a versatile channel strip for vocals, electric guitar, bass, and acoustic guitar. I'm going to try out the UA LA-610. Here's my current signal path..

vox/acoustic:
AT 4033 -> (channel strip) -> MOTU 828MkII -> Logic

electric guitar and bass:
(channel strip) -> MOTU 828MkII -> Logic