Usher 9950 really better than 9930 ? what am I missing ?

[percy]

As per the data sheets the 9930 has less overall distortion and a smoother frequency response than the 9950. The 9950 has bit lower Fs. Here are the datasheets. They include THD charts as well -

9930
9950

So why is the 9950 more expensive ? What am I not understanding ?

[kappa_ii]

it has coper rings
and lower thd at 3th order

[Helmuth]

Originally Posted by percy

As per the data sheets the 9930 has less overall distortion and a smoother frequency response than the 9950. The 9950 has bit lower Fs. Here are the datasheets. They include THD charts as well -

9930
9950

So why is the 9950 more expensive ? What am I not understanding ?

When you cut of the 9950 at 3000Hz the 9950 is smoother and has lower 3th harmonic then the 9930.

[percy]

but the 9950 has higher 2nd order all throughout. wouldn't that count against it ?
and the lower 3rd order applies only 4khz+.

[Helmuth]

Originally Posted by percy

but the 9950 has higher 2nd order all throughout. wouldn't that count against it ?
and the lower 3rd order applies only 4khz+.

if -3db is at 3kHz then also the distortion will be half the value.

Even harmonics are sound wise not bad at this low level it could create false detail.