For mixing the exported file, the bit depth and rate will be the same as what you sent me. The minimum file quality we request is 44.1k/24-bit, so one can expect that bit depth and sample rate as a minimum your project was exported as. Why? Upsampling will do nothing more than make a file size larger and does not improve the sound quality.
For mastering, especially if you require the file to be dithered in the case of CD, you shall get back a 44.1k 16-bit WAV uncompressed file. A non-dithered version will also be supplied should you need it but once again, upsampling a file makes the file larger, which is bad practice and should be avoided.
Although compressed and considered lower quality than lossless files, MP3 files are here to stay. So, mastering exports/bounces can also have a 320kbps tagged MP3 added for free per track. You will also need to provide an ISRC code, ideally for mastering and others for different formats. We can discuss your specific needs when you place an order.
I can also accommodate other file types. Should you require them, please tell me when paying or before the project is completed.
If anything is unclear, please send your questions by replying to our email correspondence or creating a new message and sending it to: email@example.com, or you can use the contact form. Please note if you need to call me that, due to the nature of my work, you may need to leave a voicemail. I will reply to you within 24 hrs unless it’s a weekend. I will respond to you over the weekend if you select any products covering weekends. For open projects, I usually reply the same day.