Calibrating your smart TV doesn't require expensive apps or equipment. The regular settings will work just fine for the vast majority of use cases.
Via the Graham Slee Asscession, vinyl sounded much smoother and richer than it does via my NAD D 3020 V2 (that has a built-in pre-amp). Of course, the DX-5 is considerably more expensive than the NAD, ...
A basic building block is often the key to completing an analog signal path in various applications, such as automated test equipment.