I own and operate a professional home recording studio with solid equipment here in LA. (Whisper Room Booth, Neumann TLM 103, or a Sennheiser Mkh 416, paired up with a Focusrite Clarett Interface, FMR Audio RNC 1773, and a Focusrite ISA One Pre Amp. I run Avid Pro Tools 12. Source-Connect or Phone Patch)
My background in marketing can also come in quite handy when crafting copy. I'm persistent, thick-skinned, have a long history in the industry, and some crazy-good VO skills in the booth.
Files can be recorded and sent in any file form necessary: MP3, MP4, WAV, AIFF, etc.
ISDN available on demand. I also have a great working connection with VoiceTraxWest a superb fully stocked studio 15 minutes from where I live.