Hemi-Demon
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I have found the photo of the Focus internals on the Nazar's forum: http://www.audio-perfection.com/forum/showthread.php?tid=608
Great off to read, Thanks
I have found the photo of the Focus internals on the Nazar's forum: http://www.audio-perfection.com/forum/showthread.php?tid=608
I have found the photo of the Focus internals on the Nazar's forum: http://www.audio-perfection.com/forum/showthread.php?tid=608
What a pairing! Let us know how it sounds, the d90 is really interestingI picked one of these up for review and to pair with my Topping D90. I'll try and drop my brief review in here as the measurements have already been well documented.
Does thx aaa 789 comes with 1 year warranty by MassDrop, or just 30 days?
Massdrop has 1 yearDoes thx aaa 789 comes with 1 year warranty by MassDrop, or just 30 days?
You always have that regardless of the dac or headphones etc. It's the amp itself that has the amount of power.1 year? That's awesome, i thought it was just 30 days..
Can i ask a easy question? With 32ohm, how can i get the balanced signal of 6W of power? With XLR Dac to amp, with XLR on just headphones, or it need both?
For a electronic noob question, I saw some amp spec their output of different impedance and SE/Balanced max power in W differently, doesn’t the input V and the load ohm affect the maximum power output?You always have that regardless of the dac or headphones etc. It's the amp itself that has the amount of power.
Are you going to put the volume on maximum all the time and blast it? If the answer is yes, sure you need to have both. If the answer is no, then you don't worry about it just listen to music. Simple.
So to have all the 6W at x6 gain the only way is to have them both XLR? If i put a single XLR instead of all single ended, no benefit? Need both XLR then?You always have that regardless of the dac or headphones etc. It's the amp itself that has the amount of power.
Are you going to put the volume on maximum all the time and blast it? If the answer is yes, sure you need to have both. If the answer is no, then you don't worry about it just listen to music. Simple.
Balanced output gives extra voltage output but no extra current output. For higher impedance, say higher than 150ohn or 50ohm or 30ohm depending on the amp, it does give 4 times the power output. For lower impedance it's basically the same as SE.For a electronic noob question, I saw some amp spec their output of different impedance and SE/Balanced max power in W differently, doesn’t the input V and the load ohm affect the maximum power output?
The maximum power output doesn't mean anything if you are not using it. And the "headroom" doesn't change with the input either. It does change with the output tho. Balanced output will give more power with high impedance. For normal use, the balanced connection's benefit is not the power but the immunity to interference. It is inherently more noisy than single ended if there's no interference. The input circuitry is much more noisy than just two buffers of single ended, generally in the order of 2-5 times. The balanced output is at least 1.4 times more noisy than single ended output.So to have all the 6W at x6 gain the only way is to have them both XLR? If i put a single XLR instead of all single ended, no benefit? Need both XLR then?
If you also know guys, if 6W is at Max gain x6 gain which is power output at medium Gain II x2 gain?
So to have all the 6W at x6 gain the only way is to have them both XLR? If i put a single XLR instead of all single ended, no benefit? Need both XLR then?
If you also know guys, if 6W is at Max gain x6 gain which is power output at medium Gain II x2 gain?
Allright, so i guess all xlr or nothing for the full power outputThe maximum power output doesn't mean anything if you are not using it. And the "headroom" doesn't change with the input either. It does change with the output tho. Balanced output will give more power with high impedance. For normal use, the balanced connection's benefit is not the power but the immunity to interference. It is inherently more noisy than single ended if there's no interference. The input circuitry is much more noisy than just two buffers of single ended, generally in the order of 2-5 times. The balanced output is at least 1.4 times more noisy than single ended output.
Ok. Now let me talk practical. With 789 there are attenuation, 0db, +6db gain 3 settings. Use 0db as much as you can. If it's too loud, use attenuation. If you don't get enough volume even when you max out the volume knob then switch to high gain. Don't use high gain as long as you can get away with it.Allright, so i guess all xlr or nothing for the full power output
2-5 more noisy, but with THX AAA 789 with ''0,0000x'' level of distortion, i guess is it not noisy at even near audible level? Or i am wrong?
Also, this 'noise' has something in common with gain multiplier? 3,3x gain or x6, doesn't it add more kinda compression to get the loudness and get fuzzy or noisy, but as we walking super transparent amp is not audible?
So with this analysis I actually recommend single end input and balanced output. This way the noise degradation is the least and you have extra free 6db gain due to balanced output itself.
The SMPS's leakage current ruined the objective performance.Interesting. Is SE in SE out still good though? You mention bal has 1.4 times the noise?
Best power supply design for single ended performance that I am aware of is external transformer like Atom.
Where do you see this leakage from Amir's mesurents?The SMPS's leakage current ruined the objective performance.
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