I recently bought an SGD 2 band replica 70s preamp and I thought I'd share my experience. The good *Beautiful organic tone. This is one of the nicest preamps I've used. It sounds musical, powerful and with one of the sweetest high ends you'll find. I have no point of reference for authenticity vs a real 70s MM 2 band, but I have heard it sounds identical. It sounds far nicer than the 3-band Sterling preamp it replaced. It is also quiet. *Great build quality Right up there with the big guys, I would say. *Excellent customer service David Schwabb is a really nice guy and always very helpful, despite being very busy. You can often find him helping out with general technical queries across Talkbass. *Delivery time. Although David has had some bad press on here due to long lead times for custom work, this was a standard order and was delivered within 4-5 working days. *Price. These are a good price for the quality. The not-so good *The only thing I can really find fault with is that it seems that the wrong spec'd treble pots ship with these by default. When I installed the pre for the first time, I noticed the treble pot gave very little boost for most of the travel and then suddenly jumped up at the end. I discovered that this was because the SGD pots are linear taper 1M pots. The pre was designed for reverse taper 1M pots. Unfortunately, David has struggled to source 1M reverse taper pots. To fix, I had to search for a compatible pot, which was a little disappointing. It didn't ruin my experience and even with the extra expense of the pot the preamp was still a decent price, it's just a shame there's only one mark against an otherwise spot on purchase. Overall, I would recommend David for his quality work and I would thoroughly recommend this pre-amp. I'm VERY happy with the result on my Musicman Sterling and frankly, the tone kicks the crap out of the old 3-band. 8/10- 10/10 if David fixes the treble pot spec.