Having all the above problems in mind, a solution to the problem is to use a higher bit converter, for example an 18 or 20 bit DAC (that is a 2^(16+x)) instead of a 16-bit DAC in CD audio reproduction. In such multi-bit DACs the lower 16 bits can be used, out of the total 18 or 20 bits available. In this way the amplitude weight of the MSB is reduced to a value equal to 2^(x-16) in which the value of x is the true bit conversion of the DAC used. Reducing the amplitude weight of the MSB reduces the weight of the error if it occurs. However, some more problems are introduced, such as the extra cost of an 18 or 20-bit converter versus the lower cost of 16-bit converter (this is of great concern in bulk production of CD players), slower conversion speed, gain error (there is a bigger ladder of resistors), slew-rate distortion and even linearity errors as discussed earlier. All of these errors and distortion-type errors introduce severe harmonic distortion and group delay, thereby perturbing signal stability and staging.