Two vintage Lomo/Kinap UP27 mic preamps. The UP-27 is one of the most well-known Soviet microphone preamps, having a reputation for its fat and warm sound.
These are a hard-to-find earlier version of the UP-27. If you search around, you can find 2 versions of this preamp made by Lomo or Kinap. The earlier version has input transformers hidden inside a metal case and has four tubes in a row. An older version has input transformers and tubes installed on both sides of the case. In this earlier version, all components connected point-to-point, while later versions used printed circuit boards.
This particular UP-27 features permalloy input transformers and point-to-point wiring. Each module utilizes 4 mil spec tubes: 3 6j32p tubes and 1 6n3p tube. Each module has two inputs and one output. As seen in the pictures, each module is missing one knob. The overall cosmetic condition of modules is very good.