Take what I post with a shaker of salt, as I am a devout Splawn player. Without getting down into the weeds about my settings and sounds, to boost or not to boost etc, here is what I think is the primary takeaway RE: Splawn Amps. First of all, they definitely do not all sound the same. Over the years with different main circuit boards and different transformers, the amps have unique characteristics. But the folks that say they don’t like Splawns generally identify a frequency in the upper midrange that they find to be a bit to pronounced. That and the fact that Scott’s primary gain circuit does not provide the same level of compression that ‘modern’ amps like the Stealth and Recto do. So, a tight(er) amp with less compression in the gain stage and a slightly boosted upper midrange makes for an amp that can feel like its ‘fighting’ with you doing leads at bedroom to low rehearsal volume.
But … those are the exact same qualities that make the Splawn sound SO BIG in a mix - whether live or recorded. Toss in a kick drum and snare, a few cymbals, a decent sized bass rig and some vocals, and a super greasy, compressed, mid-scooped ‘Modern’ guitar sound will get swallowed whole. The tighter, more articulate gain structure and more pronounced upper mids of the Splawn will hold up in the mix and sound incredible. I think for a modern metal two guitar band, the ideal pairing is one more ‘modern’ tone and one drier, tighter, ‘Splawnier’ tone. That way, the guitars are not fighting over the exact same sonic real estate.
That and the fact that between a simple pedal style EQ in the loop, a variety of boosts out front, and any of the newer ‘Amp-in-a-Box’ pedals directly into the loop return and the subtle but noticable changes from rolling different glass through the amp are all incredible ways to get a huge variety of tones out of the Splawn while still retaining its unique overall voicing.