You guys beat me to it. This is a rather unique device & great sounding signal path.
Here are the details.
RCA/A-iron Line EQ – Vintage Line EQ + “American Iron” preamp gain stage – Nebula Programs
Overview *Vintage stereo passive program line EQ + Classic American 312 preamp gain stage. *One knob program “tilt” style EQ. *Captured via A*I conversion @ 24/96 & 24/44100 (Do to user request both 96k & 44100 programs available)
Usage Tips Ideal for adding highend sheen or de-mudding a lowend heavy mix.
What is commonly referred to as a "program/tilt" EQ. This will shift the whole frequency spectrum. (Attenuates the lowend/increases the highed). This has a tilt point/center frequency @ 10khz. Everything below slowly decreases & above increases in gain. The smooth shelf boost @ 10khz & above is one of those "magic" engineering practices to add air to a signal. Much like the HF shelf on the N**e modules. This RCA pre-dates those by 20or30 years. Great for cleaning up muddy vocals/overheads/ect. On a side note - I just happened to have this patched into my passive mixing network & the A*I 312/transformers used for the makeup gain is an added bonus to the signal chain.
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