What makes the difference with cheap online automated services ?
We use our EARS to listen and make it sound really better!
Do you master digital with plug ins or is there analogue processing involved?
Both :  We use high end  AD/DA convertor ( Apogee PSX 100) and very musical EQ's ) MIAD and a huge sounding analogue masteringcompressor : The IGS Vari-Mu Tubecore  to add warmth and sonically enhance your music.
We use :

- Pro Tools HDX 12 with several mastering plug ins 

TECH SPECS / Please Read before you export your mixfiles !

• Please remove all EQ's, compressors, limiters or maximizers... from the master bus of your DAW before exporting your mix file.

• Keep about 5 dB of headroom (make sure your file isn't clipped!)

• Export your file with 3 seconds blank at the beginning and the end of each song.

• We prefer 24 bit (or 32 bit floating) stereo-interleaved WAV or AIFF mixes in 44.1 till 192 kHz.

• 16 bit is OK also, but we don't accept MP3 !

• Upload your files via WETRANSFER.com

• We need a valid e-mail address to contact you.

• Please make a comment on each track.

• We invite you to pay for our work.

• Within 3 days after payment we will send you the masters.

• One 16 bit mastered file for duplication / radio and 1 MP3-master for online distribution + MfIT ( for I-Tunes)

• Please state the preferred format of this MP3-master.