hello all, weel believe it or not but i have just got my first minidisk!! i am a self confessed audiophile but have always resisted the 'portable' option prefering to spend my hard earned cash on my Audiolabs. I have just bought a sharp MT866H(BL) off fleabay (for travelling) but it has come without the AA battery pack. there is another on ebay but the ad states its for a MT866H(s). My question is do the units differ being either BL or S serials. thanks