don't need one because the Bugle RIAA response is 30Hz to 60kHz with a Bandwidth of 15Hz to >150kHz which is gives enough headroom for the sound to stretch out but prevents any woofer pumping.
The Cornet does the same thing: RIAA response is 25Hz to 25kHz. Bandwidth = 15Hz to 30kHz.
The Cornet does the same thing: RIAA response is 25Hz to 25kHz. Bandwidth = 15Hz to 30kHz.