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Post by vcautokid on Mar 3, 2018 15:36:24 GMT -5
Congratulations Hondaman01. You have the worlds most powerful headphone amplifier with a great other feature too. Plays speakers darn nice too! Bargain of the Decade too! I want one too. Time for my headphones to have mojo shoved into them. The A100 is just that amplifier bar none for the job. Enjoy your A100!
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Post by hondaman01 on Mar 3, 2018 17:40:22 GMT -5
Thankx for the enthusiasm!! I tried my phone s worked fine. Plenty loud and clear. I won't need to do the bypas that is talked about. Who needs 50 watts to their ears anyway.
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Post by leonski on Mar 3, 2018 18:44:23 GMT -5
The delay is caused by the power supply from stone off having NO charge stored. It's gonna take a few cycles of the power line to fully charge the capacitors IN the PS. Thus a slight delay. From standby? Caps are probably already charged and need only 'housekeeping' power which comes up very quickly.
The OTHER possibility is IF you hear a clicking noise or 'ping'. This would be a relay which is a form of electric switch which disconnects the speakers for the second or so it takes the PS to get 'up' and 'stable'. No Worries here. Upon turnoff, the relay drops out, and makes another noise. Click!
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Post by leonski on Mar 3, 2018 18:50:00 GMT -5
Hondaman01, Please consider better than MP3 files. With AKG cans, you will probably be able to tell that ALAC or FLAC are 'better', unless you've already toasted your ears destroying Tweeters!
I've ran tests with volunteers and 100% they can tell better files. Source? my iMac. Headphones? Some Grado 80e which are good certainly, but NOT off the charts.
I play 'em some music they like. than I swtich to the OTHER file type and ask which they prefer. Sometimes they ask to hear the 1st file again. Without fail, they identify the lossless file.
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Post by hondaman01 on Mar 3, 2018 19:40:05 GMT -5
Ok all. Well,I see what u meen by input source. I hooked up a DVD player I had. That amp is like WOW . Gain comes up nice. Really powerful sound. No sub , just CV re30. Monster cable. Deffinatly beats the old803a. And the accurian is a back up.
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Post by hondaman01 on Mar 4, 2018 7:16:03 GMT -5
Been playing CDs for couple hours now. Thru headphones. Plenty clean ,loud enough,too. Awesome!!! From acdc to Zappa.
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Post by hondaman01 on Mar 4, 2018 11:51:57 GMT -5
Ok All. Well I found the 80 wpc. Found it when I changed the source. DVD playing CDs. Holy Makariana!!. NICE AMP!!!THINK ILL KEEP IT.
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Post by garbulky on Mar 4, 2018 15:08:47 GMT -5
Ok All. Well I found the 80 wpc. Found it when I changed the source. DVD playing CDs. Holy Makariana!!. NICE AMP!!!THINK ILL KEEP IT. The difference is not just mp3's. It's more that you got a better DAC in that CD player. (DAC - digital to analog converter). The mini-x is resolving enough that a better DAC can produce better results. Also, I don't know if you know this but there is a setting on the mini-x that allows it to unleash its headphone output. It requires putting two jumpers which come provided in to the amp. This bypasses dropping resistors that drops the power and allows for the full potential of your headphone amp to be heard. HOWEVER, it depends on which headphone if you will hear a positive difference or not. Most people have reported a positive difference when engaging the jumpers, while some have reported a higher noise floor. The procedure is completely reversible and requires only a screwdriver, so I suggest trying it and see which one sounds better to you. Just keep in mind that if you engage the jumpers, remember to turn your volume all the way down first and gently increase it as the amp is capable of putting out huge amounts of power in and if you accidentally leave it turned up all the way and then play music, you may fry your headphones. So use common sense caution. The instructions are in the manual. When I engaged the jumpers, I found better dynamics with my HD600 at all volumes including quiet volumes. My HD600's are very demanding of the headphone amp so your experience may be different.
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Post by leonski on Mar 4, 2018 15:30:17 GMT -5
OP says he has AKG headphones. I don't knwo anything about the entire line, but the name, of course, is familiar.
The model Y40, @100$ list is VERY sensitive and 32ohms, which makes good use of amp power. I rather doubt the jumper thing would help or help enough to bother. Other models may vary, or the company has a philosophy which guides them and they stick to a certain set of specs. Or try to.
I rather suspect that even an iPhone or iPad or whatever would be improved thru the use of lossless files V any flavor of MP3, even the 320khz sample rate. Memory is cheap these days and my 128gb phone would hold a LOT of lossless music!
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Post by garbulky on Mar 4, 2018 15:34:00 GMT -5
OP says he has AKG headphones. I don't knwo anything about the entire line, but the name, of course, is familiar. The model Y40, @100$ list is VERY sensitive and 32ohms, which makes good use of amp power. I rather doubt the jumper thing would help or help enough to bother. Other models may vary, or the company has a philosophy which guides them and they stick to a certain set of specs. Or try to. I rather suspect that even an iPhone or iPad or whatever would be improved thru the use of lossless files V any flavor of MP3, even the 320khz sample rate. Memory is cheap these days and my 128gb phone would hold a LOT of lossless music! Exactly. I wouldn't reccomend it for any headphones below 100-150 ohms impedance. That level of power would be too much for them. The dropping resistors up the impedance output to something like 220 ohms. So then the headphones interact with the amp's impedance causing a different output versus with the jumpers engaged. So you have two different flavors of sound.
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Post by hondaman01 on Mar 4, 2018 19:29:41 GMT -5
Headphones are600 ohm. Play nice. No need for more power. Also my hearing ain't what it was. I really wanted it to play my speakers. DVD works great. iPod works great. Thanks for the info, tho.
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Post by garbulky on Mar 7, 2018 14:10:06 GMT -5
Headphones are600 ohm. Play nice. No need for more power. Also my hearing ain't what it was. I really wanted it to play my speakers. DVD works great. iPod works great. Thanks for the info, tho. Are you sure it's not 60 ohms? 600 ohms tends to be on the very high side for a headphone. If it's really 600 ohms, then it's PERFECT for the A-100's jumper engaged mode. That's what it was built for. I strongly reccomend you try it with the provided jumpers. It's not a matter of volume. The regular mode will deafen you just as easily as the jumper engaged mode. The jumper engaged mode is about better sound quality for me at all volume levels imo. I noticed quicker dynamics and a more natural sound with less smearing. It won't change how the A-100 works with your speakers. It only affects headphone output. Check out the manual - it's pretty easy to insert the jumpers.
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Post by leonski on Mar 7, 2018 14:24:18 GMT -5
Headphone model number MIGHT help. Apparently, AKG makes a wide variety and at different impedances.
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Post by hondaman01 on Mar 7, 2018 17:45:26 GMT -5
Headphone model number MIGHT help. Apparently, AKG makes a wide variety and at different impedances.
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Post by hondaman01 on Mar 7, 2018 17:49:08 GMT -5
Headphones AKG # K 240 /600ohm. They sound pretty nice now, would there be that much difference?
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Post by hondaman01 on Mar 7, 2018 17:52:24 GMT -5
Here's a thought. If I can bridge this A, could I use two as mono blocks!? Just courious?
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KeithL
Administrator
Posts: 9,902
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Post by KeithL on Mar 8, 2018 9:52:30 GMT -5
Sorry.... the A-100 does not have a bridge option. Glad you're enjoying it though Here's a thought. If I can bridge this A, could I use two as mono blocks!? Just courious?
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Post by garbulky on Mar 8, 2018 11:30:07 GMT -5
Headphones AKG # K 240 /600ohm. They sound pretty nice now, would there be that much difference? I think so. That's why the option was made. It's completely reversible and requires no tools but a screwdriver.
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Post by hondaman01 on Mar 10, 2018 20:10:09 GMT -5
Ok I been listening to a variety of music thru this a 100 for a week now. Plays nice. Doesn't get loud until about 3:00 on volume. I was hoping for that amount of loudness at say 11:30 on volume setting. Using PlayStation to run CDs. Maybe I should opt for A300. No volume on it. Anyway for what it is it does sound nice, clear.
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Post by leonski on Mar 11, 2018 1:22:03 GMT -5
Don't worry TOO much about the 'oclock' of the VC. Does the amp or ear speakers distort at higher settings? If the headphones distort, you probably don't actually need more power. If the amp gives up first? Play with the jumper settings. This amp should drive nearly any reasonable set of headphones. BTW? My reading of the AKG site shows the 240 to be 55 ohms. There are a couple K240 models listed, the MKii and the 'studio'. Who told you 600 ohms or do you have an older model of the same 'name'?
There are 3 major VC types, called 'taper'. This is the relationship between the resistance and the rotation. The 3 are 'Linear' , 'Logrithmic' and 'AntiLogrithmic'. I think Logrithmic is what is called, generally, Audio Taper. You could substiture ANY of the 3 into a circuit and get different rotation to volume level 'feel' out of them.
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