Here's what I did. I re-connected the Jolida with the pvc removed and there is a little hiss, not real bad, but audible. Then I put the Modwright back in with the pvc removed as well. There is a hiss that is quite audible from my sitting position, around 10 to 11 feet away.
I contacted Dan Wright and he stated that the earlier models had more tube rush than the later models. I'm unsure as to which this one is, earlier or later.
The Classe monoblocks have a sensitivity of 1 volt in for the rated output. 29.02 dB gain and an input impedance of 75 Kohms.
The Jolida has an output impedance of 600 ohms, the Modwright 300 ohms.
I'm guessing the difference I'm hearing is just the type of the tubes being used in different configurations. The Jolida uses two 12AT7 tubes for power and two 12AX7's for the pre-amp. The Modwright uses a 5AR4/GZ34 rectifier tube and two 6SN7 signal tubes.
I contacted Dan Wright and he stated that the earlier models had more tube rush than the later models. I'm unsure as to which this one is, earlier or later.
The Classe monoblocks have a sensitivity of 1 volt in for the rated output. 29.02 dB gain and an input impedance of 75 Kohms.
The Jolida has an output impedance of 600 ohms, the Modwright 300 ohms.
I'm guessing the difference I'm hearing is just the type of the tubes being used in different configurations. The Jolida uses two 12AT7 tubes for power and two 12AX7's for the pre-amp. The Modwright uses a 5AR4/GZ34 rectifier tube and two 6SN7 signal tubes.