Hello Guido,
OK, lets see what's are results: by using two ICE modules you can reduce your noise by square root of two or 41%. Sounds great but if your signal is about 110 dB and noise is 1 dB (barely audible and in most amps it is less) then it became 0.6 dB almost negligible difference. Also, your level of distortion will be lowered somewhat (say instead of 0.03% it becomes 0.02% - again, hardly noticeable)
Since ICE modules are produced in mass quantities they are inexpensive and I believe that Me. Rowland can justify their use in balanced mode with almost no positive results.
On the contrary, custom in-house build modules by John Ulrick or Bruno Putzeys are very expensive and instead of spending money to double cost of the digital modules they use this money in much more effective ways, say improving power supplies, output filter, RF filtering (enormously important in class D amps) etc etc etc. On other hand, when cheap modules are used the balanced operation is beneficial for marketing reasons mostly, I believe.
All The Best
OK, lets see what's are results: by using two ICE modules you can reduce your noise by square root of two or 41%. Sounds great but if your signal is about 110 dB and noise is 1 dB (barely audible and in most amps it is less) then it became 0.6 dB almost negligible difference. Also, your level of distortion will be lowered somewhat (say instead of 0.03% it becomes 0.02% - again, hardly noticeable)
Since ICE modules are produced in mass quantities they are inexpensive and I believe that Me. Rowland can justify their use in balanced mode with almost no positive results.
On the contrary, custom in-house build modules by John Ulrick or Bruno Putzeys are very expensive and instead of spending money to double cost of the digital modules they use this money in much more effective ways, say improving power supplies, output filter, RF filtering (enormously important in class D amps) etc etc etc. On other hand, when cheap modules are used the balanced operation is beneficial for marketing reasons mostly, I believe.
All The Best