Pictured below is the DÆ v3.0 Phono Preamp. This a complete two channel phono preamp in an aluminum and acrylic enclosure. The phono preamp includes the following circuits that are described in previous blog posts as noted:

Two v2.1 Phono Preamps (blog post dated May 23, 2020);
One v3.0 Battery Charger/Power Supply (blog post dated September 9, 2020);
One v0.1 “Sort of Analog Panel Meter” (blog post dated May 19, 2020);
A battery pack with Six, 6-volt valve regulated lead–acid (VRLA) batteries, commonly known as a sealed lead–acid (SLA) batteries. When fully charged the battery pack provides a six hour playing time.

The enclosure has overall dimensions (W x L x H) of 280 x 275 x 95 mm (11 x 10.8 x 3.75 inches). It includes a 2.5 mm thick black anodized aluminum front covered by a 2 mm thick clear acrylic panel. The rear of the acrylic panel is laser engraved with the text. The top and sides are 1 mm thick brushed aluminum covered by 3 mm thick translucent gray acrylic panels. The back is a 1 mm thick aluminum covered by a laser engraved 1.5 mm thick black on white acrylic panel. The bottom is a 1 mm thick aluminum panel lined on the interior with a 5.6 m thick opal colored acyclic panel that serves to retain the bottom edge of the batteries and provides a foundation for mounting the other components.

Phono Preamp Rear - Note that the right and left channels have both balanced (XLR) and single ended (RCA) outputs.

Note that the interior is relatively free of cable looms. To keep the background noise as low as possible the analog signals never leave the printed circuit board attached to the rear panel. To maintain good channel separation, the left and right channels are mirror image circuits around the input RCA connectors.

Phono Preamp Side, Covers Removed - Note Battery Charger/Power Supply in the fore ground.

Note bottom acrylic panel that retains the bottom edge of the batteries and provides an attachment point for the feet and heat sink brackets using thermal inserts made of brass.

The batteries are held down by a 20 mm square aluminum extrusion. A post of the same 20 mm square extrusion retains one edge of the batteries and provides a mounting point for the Battery Charger/Power Supply.