Allen&Heath Xone V6 - Manual (Page 40)

40 XONE:V6 User Guide
20.00 Hz 100.00 1000.00 10000.00 20000.00
-20.00
-15.00
-10.00
-5.00
0.00
5.00
10.00
15.00
20.00
dBr
RIAA Response
20.00 Hz 100.00 1000.00 10000.00 20000.00
-140.00
-120.00
-100.00
-80.00
-60.00
-40.00
-20.00
-0.00
dBu
FFT of Valve Input
RIAA This graph shows the equalisation curve of the
channel RIAA input. This compensates for the response of
the pickup cartridge to result in a flat music response.
Valve channel distortion This graph shows the
harmonic distortion associated with the valve preamp. The
1kHz test tone is shown, together with a strong second
harmonic distortion. This accounts for the ‘musical warmth’
associated with valve circuits.