A recording and/or reproducing apparatus for a tape-shaped recording medium to record analog audio signals includes a recording and/or reproducing head, a detecting section, and a compensating section. The head records or reproduces analog signals to or from the tape-shaped recording medium. The detecting section detects any fluctuation in the transporting speed of the tape-shaped recording medium with respect to a rated transporting speed. The compensating section modifies, on the basis of detection results from the detecting section, the analog signals, read out from or to be recorded on the tape-shaped recording medium by the head, so as to compensate for the effect of any fluctuation in the transporting speed of the tape-shaped recording medium with respect to the rated transporting speed before outputting these analog signals or supplying them to the head.