How to Digitize Your Vinyl Record Collection with an iPhone
You can digitize your vinyl straight to your iPhone with the right connection. The key is the signal chain. A turntable needs a phono preamp before it reaches a USB audio interface and your phone. That is where an app like Reel captures the transfer in clean 32-bit float. This guide covers the chain, the one part people get wrong and how to get a faithful digital copy of your records.
The signal chain, step by step
Digitizing a record is a short chain and getting each link right is what makes the transfer sound correct. Turntable, then a phono preamp, then a class-compliant USB audio interface, then your iPhone running Reel.
The interface turns the analog signal into audio the phone can record. Reel is where you capture and save it. Miss the phono preamp step though and the whole thing sounds wrong.
Why you need a phono preamp
A turntable's output is not a normal line signal. It is very low level and has a built-in tonal curve called RIAA equalization that has to be reversed. A phono preamp does both jobs. It boosts the signal to line level and applies the correct equalization.
Many turntables and amplifiers have a phono preamp built in, sometimes as a line or phono switch. If yours does, use it. If it does not, add an inexpensive standalone phono preamp between the turntable and the interface. Without one your transfer will be quiet and tonally thin.
Connecting to the iPhone
Once the signal is at line level, run it into a class-compliant USB audio interface. Then connect that interface to your iPhone with a USB-C cable or an Apple Camera Adapter. Reel detects the interface and switches its input to it automatically.
Setting levels and recording
Because Reel records in 32-bit float you cannot clip the transfer. Set a comfortable level and record a whole side in one pass. Keep the room quiet and avoid bumping the turntable while it plays.
Recording a full side unbroken keeps the timing and any between-track ambience intact. That is closer to the record itself.
Splitting tracks and exporting
After the side is captured, you can trim the start and end. If you like, split it into individual tracks. Export as WAV for an archival-quality copy that preserves the full dynamics of the record. A clean 32-bit float transfer is a faithful digital version of what is in the groove.
Frequently Asked Questions
Can I record vinyl directly to my iPhone?
Yes, through a phono preamp and a class-compliant USB audio interface. The turntable's signal must be brought to line level first. Then the interface connects to the iPhone and Reel records it.
Do I need a phono preamp to digitize records?
Yes, unless your turntable or amplifier already has one built in. A turntable's output is too low and needs RIAA equalization applied before it can be recorded correctly.
What format should I save vinyl transfers in?
WAV is best for archival quality. Reel records 32-bit float, which preserves the full dynamic range of the record.
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By Tug. Tug is the founder of 24bit Studio and the developer of Reel, a portable 4-track recorder for iPhone.