I used this for a RIAA tube phono stage. There is enough height for the hree ECC83 tubes. I also ordered the aluminium perforated top-side. With that everything stays nicely cool.
The original topboard I used to make a separation between circuit- and powerboard. The 3mm frontpanel is far more handy to mount the switches than the 10 version. Everything went smooth together. The result looks and sounds very good!!