This thread discusses features and experiences with the now withdrawn Rowland Model 301 class D monoblock power amplifier.
You will find specs and other technical information on the JRDG knowledge base at:
http://jeffrowlandgroup.com/kb/categories.php?categoryid=11
At $30,250 per pair (version with curved front faceplate), Model 301 was probably one of the most expensive class D monoblock power amplifiers on the market until its 2012 withdrawal. It was introduced in 2003 as a monoblock companion of the Model 302 stereo, but in recent years it has undergone a significant 'silent' update, and now sports the ICEpower 1000 ASP modules also used in the Model 312.
Differences between the two iterations of M301 are shown at:
http://jeffrowlandgroup.com/kb/questions.php?questionid=518
Version identification based on serial number is at:
http://jeffrowlandgroup.com/kb/questions.php?questionid=571
Like 312, M301 uses an active PFC-based front end rectification section (I believe 1200W per chassis), its I/O is completely transformer coupled. 301 is completely balanced from the inputs stages to and including the outputs, which means that both positive and negative output terminals carry a signal to the connected speaker.
I will update this post periodically with further information.
Guido
You will find specs and other technical information on the JRDG knowledge base at:
http://jeffrowlandgroup.com/kb/categories.php?categoryid=11
At $30,250 per pair (version with curved front faceplate), Model 301 was probably one of the most expensive class D monoblock power amplifiers on the market until its 2012 withdrawal. It was introduced in 2003 as a monoblock companion of the Model 302 stereo, but in recent years it has undergone a significant 'silent' update, and now sports the ICEpower 1000 ASP modules also used in the Model 312.
Differences between the two iterations of M301 are shown at:
http://jeffrowlandgroup.com/kb/questions.php?questionid=518
Version identification based on serial number is at:
http://jeffrowlandgroup.com/kb/questions.php?questionid=571
Like 312, M301 uses an active PFC-based front end rectification section (I believe 1200W per chassis), its I/O is completely transformer coupled. 301 is completely balanced from the inputs stages to and including the outputs, which means that both positive and negative output terminals carry a signal to the connected speaker.
I will update this post periodically with further information.
Guido
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