Pre amplifiers, line circuits.
A DRV134 based converter for unbalanced signals to balanced. It's also a driver with good driving capability. The pcb has two layers and gold pads. It's an unpopulated pcb. The DRV134 for the pcb can be bought, see below at accessories. Info here
This is a masterpiece when it comes to vinyl listening experience, an ultra high performing RIAA amplifier which can handle MC and MM cartridges. I have put lot's of work into the design and every built amp have worked right away. It's an unpopulated pcb. Info here
Adapter for SO08 parts to DIL08. 60 adapters in one panel. The panel consists of: 20 x Single opamp SO08 -> Single opamp DIL08, model A 20 x Dual opamp SO08 -> Dual opamp DIL08, model B 20 x Two single opamps SO08 -> Dual opamp DIL08, model C More info here.
A so called diamond buffer with the gain of 1. The Sjöström Super Buffer can be used in any hifi equipment. People have used them in CD player tweaks. The pcb has four layers and parts on both sides. The soldermask is black with yellow print. All pads have a layer of pure gold. It's an unpopulated pcb. Two boards are required for stereo. Info here
A so called diamond buffer with the gain of 1. The Sjöström Super Buffer can be used in any hifi equipment. People have used them in CD player tweaks, as line buffers in preamps etc. The pcb is BLACK with Yellow print, has four layers, gold pads and parts on both sides. It's a built unit. The buffer is hand soldered by Per-Anders Sjöström, the shop...