UAS - Universal Amplification Stage

[Luke]

Stee, I think the real Rowland has more than 4 chips per channel. That might be from National app notes?

 

[homemodder]

This for me would be a much better amp.

 

[Stee]

Comes from BB

for ideal performance use 6 chip for channel
need also a Preamplifier with gain ratio 5
better have balanced source

 

[Luke]

Hi Homemodder,

what is the amplifier schematic you posted above?

 

[homemodder]

Jeff Roland model 9, watch it, there might be some mistakes on there.

 

[Stee]

please see this also

http://cgi.ebay.it/BGR-Blazer-X6-60...39783QQcmdZViewItemQQ_trksidZp1742.m153.l1262

 

[Luke]

Stee, that blazer is not the same schematic as what homemodder has posted, one if not both are incorrect.

 

[Stee]

the famous UAS

last version is the result of many years of investigation
that architecture can lose the timbrical imprinting of device in use
because balance the gain in each rail
and have a very short ring of NFB

all the value are indicative

 

[destroyer X]

Good!... absence of sonic signature..... nice that

thank you.

regards,

Carlos

 

[Stee]

thanks Carlos

the layout can be this
with two stages voltage and current
very important have the same hFE driver/final copule

 

[Stee]

show what I means

it is important use the same devices in each block

maybe for a power amplifier need 4 blocks:
0.01A 0.1A 1A and 10A Ic