MOSFET power amp..???
 

After the recent talk here about MOSFET amps I have been watching this one:

http://cgi.ebay.co.uk/ws/eBayISAPI.d...3273&rd=1&rd=1


Anybody got a opinion - I can't see any speaker terminals in the pix, is it
summat weird for studio use only? (I would need to be able to use it as an
ordinary 'power' amp...??)

Also, any problem with unbalanced/XLR connectors - I already have them on my
mic pres...??

TIA....

MOSFET power amp..???
 

"Keith G" wrote in message
...

After the recent talk here about MOSFET amps I have been watching this
one:

http://cgi.ebay.co.uk/ws/eBayISAPI.d...3273&rd=1&rd=1


Anybody got a opinion - I can't see any speaker terminals in the pix, is
it summat weird for studio use only? (I would need to be able to use it as
an ordinary 'power' amp...??)

Also, any problem with unbalanced/XLR connectors - I already have them on
my mic pres...??

TIA....




Could be via jack sockets, not very good but its done in some semi-pro gear
like Bose etc.

Cheers,

Mike

MOSFET power amp..???
 

On Mon, 2 Apr 2007 16:30:41 +0100, "Keith G"
wrote:


After the recent talk here about MOSFET amps I have been watching this one:

http://cgi.ebay.co.uk/ws/eBayISAPI.d...3273&rd=1&rd=1


Anybody got a opinion - I can't see any speaker terminals in the pix, is it
summat weird for studio use only? (I would need to be able to use it as an
ordinary 'power' amp...??)

Also, any problem with unbalanced/XLR connectors - I already have them on my
mic pres...??


You can read about them here.
http://sovereignwebpage.pwp.blueyonder.co.uk/page2.html

The base model seems to have come with jacks for input and output -
XLRs and balanced inputs were offered as an option.

As it's in a 2U rackmount case, I imagine the cooling fans will be
quite powerful and therefore quite noisy. Are you looking at these
for domestic hi-fi use?

MOSFET power amp..???
 

"Laurence Payne" lpayne1NOSPAM@dslDOTpipexDOTcom wrote in message
...
On Mon, 2 Apr 2007 16:30:41 +0100, "Keith G"
wrote:


After the recent talk here about MOSFET amps I have been watching this
one:

http://cgi.ebay.co.uk/ws/eBayISAPI.d...3273&rd=1&rd=1


Anybody got a opinion - I can't see any speaker terminals in the pix, is
it
summat weird for studio use only? (I would need to be able to use it as an
ordinary 'power' amp...??)

Also, any problem with unbalanced/XLR connectors - I already have them on
my
mic pres...??


You can read about them here.
http://sovereignwebpage.pwp.blueyonder.co.uk/page2.html

The base model seems to have come with jacks for input and output -
XLRs and balanced inputs were offered as an option.

As it's in a 2U rackmount case, I imagine the cooling fans will be
quite powerful and therefore quite noisy. Are you looking at these
for domestic hi-fi use?



No, my interest has shifted to this now:

http://cgi.ebay.co.uk/ws/eBayISAPI.d...0372&rd=1&rd=1


(Mostly idle curiosity....)

MOSFET power amp..???
 

"Mike Gilmour" wrote in message
...

"Keith G" wrote in message
...

After the recent talk here about MOSFET amps I have been watching this
one:

http://cgi.ebay.co.uk/ws/eBayISAPI.d...3273&rd=1&rd=1


Anybody got a opinion - I can't see any speaker terminals in the pix, is
it summat weird for studio use only? (I would need to be able to use it
as an ordinary 'power' amp...??)

Also, any problem with unbalanced/XLR connectors - I already have them on
my mic pres...??

TIA....




Could be via jack sockets, not very good but its done in some semi-pro
gear like Bose etc.



OK, Mike - thanks for that!

MOSFET power amp..???
 

In article ,
Keith G wrote:
Anybody got a opinion - I can't see any speaker terminals in the pix, is
it summat weird for studio use only? (I would need to be able to use it
as an ordinary 'power' amp...??)

Could well use XLRs for the outputs. Only weird studio amps you might come
across have a 100 volt line output - but will be marked as such. Although
not used for monitoring speakers but driving headphone rings, etc.

Also, any problem with unbalanced/XLR connectors - I already have them
on my mic pres...??

Only snag may be is that pro amps usually need more driving than domestic
gear due to different line levels.

--
*I wished the buck stopped here, as I could use a few*

Dave Plowman London SW
To e-mail, change noise into sound.

MOSFET power amp..???
 

"Dave Plowman (News)" wrote in message
...
In article ,
Keith G wrote:
Anybody got a opinion - I can't see any speaker terminals in the pix, is
it summat weird for studio use only? (I would need to be able to use it
as an ordinary 'power' amp...??)

Could well use XLRs for the outputs. Only weird studio amps you might come
across have a 100 volt line output - but will be marked as such. Although
not used for monitoring speakers but driving headphone rings, etc.

Also, any problem with unbalanced/XLR connectors - I already have them
on my mic pres...??

Only snag may be is that pro amps usually need more driving than domestic
gear due to different line levels.



No worries, I'm giving it a wide berth!!

MOSFET power amp..???
 

"Keith G" wrote in message
...

After the recent talk here about MOSFET amps I have been watching this
one:

http://cgi.ebay.co.uk/ws/eBayISAPI.d...3273&rd=1&rd=1


Anybody got a opinion - I can't see any speaker terminals in the pix, is
it summat weird for studio use only? (I would need to be able to use it as
an ordinary 'power' amp...??)

**I don't know the amp, but it depends on the intended use. As a power amp,
it wil clearly beat any of your favoured Chinese SET amps. Easy. MOSFETs,
OTOH, are not, IMO, the best choice for really high quality audio. MOSFETs
exhibit significantly higher distortion than BJTs, at low to medium bias
levels. At high bias levels, they exhibit only marginally worse distortion.
Additionally and more controversially, MOSFETs 'strangle' the sound, via a
kind of compression mechanism, associated with the negative tempco of gm
inherent to MOSFETs.


Also, any problem with unbalanced/XLR connectors - I already have them on
my mic pres...??

**Nope. Just earth the negative.


--
Trevor Wilson
www.rageaudio.com.au



--
Posted via a free Usenet account from http://www.teranews.com

MOSFET power amp..???
 

"Keith G" wrote in message
...


http://cgi.ebay.co.uk/ws/eBayISAPI.d...0372&rd=1&rd=1


Clearly, this is being delivered in a chauffer driven limo, for £35.

tox

MOSFET power amp..???
 

"Trevor Wilson" wrote in message
.. .

"Keith G" wrote in message
...

After the recent talk here about MOSFET amps I have been watching this
one:

http://cgi.ebay.co.uk/ws/eBayISAPI.d...3273&rd=1&rd=1


Anybody got a opinion - I can't see any speaker terminals in the pix, is
it summat weird for studio use only? (I would need to be able to use it
as an ordinary 'power' amp...??)

**I don't know the amp, but it depends on the intended use. As a power
amp, it wil clearly beat any of your favoured Chinese SET amps. Easy.



When people make these sort of comments about stuff they haven't personally
heard I am minded of two schoolkids arguing which is best - Ferrari or
Maserati....???

My Chinese SET beat an expensive UK kit (again) only *last night* - much
better bass, if nothing else....



MOSFETs,
OTOH, are not, IMO, the best choice for really high quality audio. MOSFETs
exhibit significantly higher distortion than BJTs, at low to medium bias
levels. At high bias levels, they exhibit only marginally worse
distortion. Additionally and more controversially, MOSFETs 'strangle' the
sound, via a kind of compression mechanism, associated with the negative
tempco of gm inherent to MOSFETs.



This does not seem to gel with what I am reading in the copious paperwork
that came with the Technics pre/power I've just got, but I haven't read it
all yet....??

(I'm under the impression atm that MOSFETS are being used in it particularly
for their 'linearity' and freedom from distortion..??)




Also, any problem with unbalanced/XLR connectors - I already have them on
my mic pres...??

**Nope. Just earth the negative.



OK - thanks, but I've decided to ignore that particular bit of kit now...