It’s the guitar.
The headless guitar itself is a kind of guitar designed for showing off. Since it has many defects compared to ordinary guitars in some aspects, it generally does not have all the advantages when the price is low. It's sound and durable, so low-end headless instruments often disappoint.
1. The timbre of a headless guitar may be a little inferior to that of a traditional guitar, because the headstock must have an impact on the timbre, and it only depends on the size of the impact. However, the average guitar enthusiast can accept this small impact.
2. Another point is that after connecting the two heads of the guitar to the effector, different timbres can be set. In the first song "Pi Mian Party" at the Beyond concert in 1991, Huang Guanzhong used the upper headstock (distorted) when playing the intro. As soon as the intro was finished, he immediately switched to the lower one. The lower one was obviously ordinary and very bright. Tone, suitable for accompaniment