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Author Topic: Portable amps  (Read 81423 times)

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munch

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Re: Portable amps
« Reply #280 on: October 21, 2013, 11:29:55 PM »

UHA-6s MKII + HD650 = ?
I am actually wondering if the UHA760 will work with HD650 but if the 6s MKII works well I suspect the 760 might be as good or better.
anyone who have tried or could try and give some descriptions?

thanks!
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CEE TEE

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Re: Portable amps
« Reply #281 on: October 23, 2013, 06:44:51 PM »

Hey Anax, when you have a chance...let us know if you notice anything between the AD 4627 ARZ and the BRZ versions.


I am going to have Nick adjust my UHA-6S MkII back to normal gain (was set to -12db which is too low for UERM).


As for the yet-to-be released Leckerton 760, you can sign up for an email list on the new unit and the intro price will be $379 and then going up to $439.  (I'll definitely be getting one at $379.)
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Anaxilus.

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Re: Portable amps
« Reply #282 on: October 23, 2013, 06:49:07 PM »

Will do, still coughing up a lung.  I guess the price increase was inevitable.
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phillip88

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Re: Portable amps
« Reply #283 on: October 24, 2013, 05:42:15 AM »

I don't understand, if I'm reading correctly, 760 can only take up to 16/48? With the increasing popularity of 24/96, 24/192 music, isn't it more feasible to introduce a DAC which supports it? Perhaps it has some engineering reasons.
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shotgunshane

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Re: Portable amps
« Reply #284 on: November 08, 2013, 08:16:31 PM »

Even though the new UHA760 stock soldered configuration will be with the 8610 opamps, there will be alternate opamp configurations available, including the 4627. Confirmed via email from Nick.
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CEE TEE

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Re: Portable amps
« Reply #285 on: November 08, 2013, 08:19:48 PM »

^Ha!  I just emailed him that question last night...


For the UERM, I hasd my 6S mk II gain lowered -12db.  That was a bit too low for UERM, could run out of pot on certain recordings.


Standard is okay, but I think -6db is good for UERM and -12db good for very sensitive iems.


I'll be asking for -6db if that is possible on the new amp and he thinks the gain should be fairly equivalent across models.
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FlySweep

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Re: Portable amps
« Reply #286 on: November 09, 2013, 01:04:41 AM »

^Ha!  I just emailed him that question last night...


For the UERM, I hasd my 6S mk II gain lowered -12db.  That was a bit too low for UERM, could run out of pot on certain recordings.


Standard is okay, but I think -6db is good for UERM and -12db good for very sensitive iems.


I'll be asking for -6db if that is possible on the new amp and he thinks the gain should be fairly equivalent across models.

I've found this to depend on the voltage output of the DAC you use w/ the UHA's amp.  Using the UHA's internal DAC (which probably outputs something much lower than 2 Vrms?), the -12dB gain can be a bit low at times.. use an external  DAC with a higher output (i.e. like the ODAC.. which outputs the Redbook standard 2Vrms) and the -12dB gain is quite sufficient.
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CEE TEE

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Re: Portable amps
« Reply #287 on: November 09, 2013, 01:20:20 AM »

^Thanks for that clarification!  I like the ODAC from my Mac into Leck but my main rig is there so I don't use it.  The work PC stutters into the ODAC.  I need to load music and a player to get that system to work.  Using iPhone 4S>Leck primarily.


Good to hear that angle on the gain issue.  The new 760 has three levels of gain, wonder if that will solve the issue and provide enough options.
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shotgunshane

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Re: Portable amps
« Reply #288 on: November 09, 2013, 02:23:09 AM »

I'll be using the built in dac. Let us know if he says you can have different lowest gain settings.
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zerodeefex

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Re: Portable amps
« Reply #289 on: November 14, 2013, 07:03:00 AM »

Good to hear that angle on the gain issue.  The new 760 has three levels of gain, wonder if that will solve the issue and provide enough options.

Bugged Nick on the FB page, looks like the gain levels of the UHA760 translate to the following:

Low - equivalent to -12dB on the UHA-6S.MKII
Med - equivalent to the low setting on the UHA-6S.MKII
High - equivalent to the high setting on the UHA-6S.MKII
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