I have about a $300 (can go a little higher if needed) budget for a new vocal mic preamp that will be used with a Sennheiser e835 and Marshal MXL V77 mic. What are some other good options (DIY included) in this price range? Someone recommended I just buy an ART ProChannel, but I thought I'd be able to build a better preamp for the money...is it plausible? Thanks in advance!