The Truth About Tuning - What makes a quality tuning?
If you want recording studio or concert artist quality tuning, it cannot be stressed enough that you will not get a quality tuning without pitch raising.
Truth: You can only tune a piano after you've gotten every string close to the concert pitch of A440. Detailed pitch adjustment creates this precision. Then and only then will you achieve an amazing tuning. If you don't follow specific advanced tuning techniques prior to your final tuning, your recording or performance will be out of tune.
Yes, your piano can be tuned and still be out of tune without proper pitch raising! Not all tuners will do this properly. Investing in a high quality tuning will make all the difference. Value your piano as an investment and give it the tuning it deserves.