My opinion, is that constantly offering small upgrades and options to the SWL9.0SE, while extremely flexible and convenient is ultimately frustrating because one never knows what version one owns, what is standard, and frankly, it contributes to Audiophilia Nervosa. :)
The series of seemingly endless mini-revisions of the NuForce amplifiers comes immediately to mind.
My suggestion would be to keep the current SWL9.0SE as is, and continue to offer the options of Bybees, Blackgate, and Tung Sol tubes.
I would suggest a stand alone outboard phono section as a separate Modwright product.
I would further suggest a new, upgraded Modwright preamp which would include standard balanced outputs, output transformers, Blackgate cap in the power supply, an outboard power supply, and other goodies you might be considering. Further, even in this unit, I'd suggest leaving Bybees as an option.
One last thought...if the stand alone phono section is problematic and expensive to produce, I would suggest keeping the phono section an optional feature on only the new, upgraded preamp, and I'd make it an on-board section rather than an outboard unit to keep down the cost.
That's my two cents...
The series of seemingly endless mini-revisions of the NuForce amplifiers comes immediately to mind.
My suggestion would be to keep the current SWL9.0SE as is, and continue to offer the options of Bybees, Blackgate, and Tung Sol tubes.
I would suggest a stand alone outboard phono section as a separate Modwright product.
I would further suggest a new, upgraded Modwright preamp which would include standard balanced outputs, output transformers, Blackgate cap in the power supply, an outboard power supply, and other goodies you might be considering. Further, even in this unit, I'd suggest leaving Bybees as an option.
One last thought...if the stand alone phono section is problematic and expensive to produce, I would suggest keeping the phono section an optional feature on only the new, upgraded preamp, and I'd make it an on-board section rather than an outboard unit to keep down the cost.
That's my two cents...

