根據pioneer韌體內容告知,如下:
DVD+R9 supported media types: 6
------------------------------------------
MKM_____ 001 8x,6x,4x,2.4x
MKM_____ 003 8x,6x,4x,2.4x
RICOHJPN D00 2.4x
RICOHJPN D01 2.4x
SONY J01
SONY J11

DVD-R9 supported media types: 1
------------------------------------------
MKM 01RD30 8x,6x,4x,2x

也因此RICOH DL最多只能燒2.4X的倍速,而市售的VERBATIM跟三菱2.4X/4X DL來說,都是可以上去8X的...