oas
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come in a wall plug version? all i have seen is 9v powered. I really want some grados and this seems to be the best amp.
Does the RA-1...
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Sol_Zhen
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Music Direct sells the RA-1 (9v) for $350 and the AC version for $425. So the answer is yes, but it's more expensive. Apparently the AC version also has battery capability.
Czilla9000
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Remember - given the same voltage and current - batteries will always sound better. That is because batteries are 100% pure DC...while AC power has to be converted to DC causing anomolies such as the ripple effect.
Sovkiller
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There is a thread here about that, Grado offers the conversion service for about 75.00, shipping included, just look here....
http://www4.head-fi.org/forums/showt...ghlight=RA1+AC
http://www4.head-fi.org/forums/showt...ghlight=RA1+AC
Sovkiller
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Quote:
yes, that's true, but the conversion service from Grado is with +/- 12 volts DC so the sound in this case is better than with the original +/- 9 Volts
| Originally posted by Czilla9000 Remember - given the same voltage and current - batteries will always sound better. That is because batteries are 100% pure DC...while AC power has to be converted to DC causing anomolies such as the ripple effect. |
yes, that's true, but the conversion service from Grado is with +/- 12 volts DC so the sound in this case is better than with the original +/- 9 Volts
Digital-Monk
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Quote:
You may want to look into other amps aswell. I tried out the RA-1 with SR-325's and wasn't overly impressed. I think there's a lot of other good options out there for that price. Some folks do really like it though.
| Originally posted by oas come in a wall plug version? all i have seen is 9v powered. I really want some grados and this seems to be the best amp.
|
You may want to look into other amps aswell. I tried out the RA-1 with SR-325's and wasn't overly impressed. I think there's a lot of other good options out there for that price. Some folks do really like it though.
Sovkiller
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Gilmore??? It was also designed for Grados by Kevin Gilmore
Ebonyks
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Couldn't you just add a wall-wart in socket on the back, and solder the wires into the voltage imput lines? I can't imagine that being very hard
Digital-Monk
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Quote:
I don't think it's that easy. I'm not a pro DIY, but you'd probably have to change the transformer, and maybe beef up the cap's as well.
| Originally posted by Ebonyks Couldn't you just add a wall-wart in socket on the back, and solder the wires into the voltage imput lines? I can't imagine that being very hard |
I don't think it's that easy. I'm not a pro DIY, but you'd probably have to change the transformer, and maybe beef up the cap's as well.
Sovkiller
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you may need two power supplies, they work with +/- 9v, not with 9 volts directly, so you may need to attach two power supplies one on each connector....KR did that I think IIRC I read that in one thread some time ago, using the ratshack 9v eliminator....
Zanth
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Are we certain the AC version maintains DC 9V capabilities? I was under the impression once one goes AC Walwart...they lose the capability of batteries.
geom_tol
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Quote:
Higher voltage does not equate better sound.
Why do you think it sounds better?
| Originally posted by Sovkiller yes, that's true, but the conversion service from Grado is with +/- 12 volts DC so the sound in this case is better than with the original +/- 9 Volts |
Higher voltage does not equate better sound.
Why do you think it sounds better?
dfarina
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Quote:
Yup.....you are correct,you have to go one way or the other when the unit is done by Grado.
| Originally posted by Zanth Are we certain the AC version maintains DC 9V capabilities? I was under the impression once one goes AC Walwart...they lose the capability of batteries. |
Yup.....you are correct,you have to go one way or the other when the unit is done by Grado.
Eagle_Driver
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The RA-1 AC version does NOT have battery capability, either. So, if you do end up choosing the RA-1, you'll either have battery capability OR AC capability - but not both in the same unit.
Sovkiller
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Quote:
Higher voltage, almost 33% over, depending on the design, with a good regulated and filtered power supply, means better sound, of course not out of a crappy wallmart. But anyway, there is a thread on that, and the guy who got the mod directly from Grado, explains his comparison, at least IIRC has a lot more gain, OTOH if Grado considered that the quality of sound would be compromised, I think that they would refused the idea instead of charging 75.00 for it.....Don't you think?
| Originally posted by geom_tol Higher voltage does not equate better sound. Why do you think it sounds better? |
Higher voltage, almost 33% over, depending on the design, with a good regulated and filtered power supply, means better sound, of course not out of a crappy wallmart. But anyway, there is a thread on that, and the guy who got the mod directly from Grado, explains his comparison, at least IIRC has a lot more gain, OTOH if Grado considered that the quality of sound would be compromised, I think that they would refused the idea instead of charging 75.00 for it.....Don't you think?
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