I was distracted by the reel to reel and almost missed the dust bug. Just curious, what make is that reel to reel?
The tape recorders are interesting.
The one on the left is a Studer Revox A77 MkII. It is a high speed version (15 & 7.5 ips) and two track. I bought it as a wreck on eBay and restored it.
The machine on the right of the TEAC Z2000 mastering cassette deck is a Studer Revox A77 MK IV. The perspex dust cover is on. It is a four track standard speed (7.5 & 3.75 ips) machine. I bought it for $60 on eBay. It is in very nice shape, but had serious electrical problems and was a challenge. But it has made a nice machine. It has an external Dolby B decoder above it. That is a rare Advent decoder designed by Harry Kloss. That is another restoration of an eBay purchase.
The recorder to the left of the MK IV with the brushed aluminum deck, is a bespoke Brenell MK VI deck, that I custom ordered in 1974. It records half track, but has four heads, and can play back two and four track tapes. It is three speed (15, 7.5 and 3.75 ips). It has dbx 2 decode/encode available.
This is one of very few MK IV machines with the parabolic head path. There is only two others I know of. There were a lot made for the BBC, but I understand they were trashed quite a few years ago.
The recorder below that is a Studer Revox MK 1. I bought this for practically nothing as a total wreck. I replaced heads, and everything that moved, as well as restored the electronics. It came out of a radio station down south, where it had had a very long hard life. It is a high speed two track and has Dolby A code/encode available.
This is a Studer Revox A 700 half track three speed, that I bought at the same time as the Brenell, in 1974. It has dbx 1 code/encode available.
I used the Brenell MK IV and the Revox A 700 and the dbx 1 encoder, to make commercial recordings and used them for countless outside broadcasts for public radio.
You can download a CD recorded on the above equipment here.
It is complete with cue file.