This is a Big Briar Etherwave Theremin.
This is a rare model with 4 coils (see 6th photo).
The serial number is in the 1600s, indicating it was manufactured relatively early by Big Briar, and I believe it holds value as a vintage item.
It is in perfect working condition and produces a clear sound.
Includes the main unit, 2 antennas, and AC adapter only.
A stand is not included, and there is no box or instruction manual.
The AC adapter is not the original one; it is a Japanese-made adapter with a 100-volt input.
We request that only those who understand theremins purchase this item.
*The microphone stand listed separately was used with this theremin, but due to its dimensions, it cannot be shipped together. Therefore, we cannot accommodate combined purchases.
Daily Cleaning: Use a soft brush or damp cloth to gently wipe away dirt. Avoid harsh chemicals. For mesh areas, use diluted mild detergent and a soft brush.
Drying: Air dry in a cool, shaded place after cleaning. Avoid direct sunlight or high heat, which can cause fading and glue deterioration.
Storage: Stuff with paper to maintain shape when not in use. Store in a dry, ventilated area to prevent mold. Rotate between multiple pairs to extend lifespan.
Usage Notes: Designed for basketball. Not recommended for hiking, long-distance running, or other specialized sports where different performance features are required.
The product does what it’s supposed to do. Nothing extraordinary, but it performs its function well. Delivery was quick and smooth.