In addition to the pup-tent style cabinet, the E-Wind S theremin from TAK Laboratory features an LED "null point" indicator for the pitch antenna, a mute switch, and a tuner output.
The product manual also claims to specialize in the timbre of stringed instruments, though I couldn't find audio samples to verify this.
If you're still not convinced this theremin is for you, consider a quote from (translated) website: "The place of trance techno to participating does not question genre from the classic." Got it? ;)
The E-Winds S Theremin is available from Five G Music Technology (translated) for about 71400 Yen ($680 USD based on the current exchange rate).
Related links:
- EWinds Website: Japanese | English (translated)