2020 Stereo+ Nr2: MI 23.5, page 36
2016 Håkon Rognlien: MI-23 and MI-22
2011 Fidelity Nr52: MI 10.1 and MI 11, page 72
2010 Fidelity Nr42: MI 9, page 72
2003 Fidelity Nr2: MI 7, page 84
1996 Audio, nr3: MI 2, page 14