or Connect
Head-Fi.org › Forums › Equipment Forums › Headphone Amps (full-size) › hotaudio40 's amps
New Posts  All Forums:Forum Nav:

hotaudio40 's amps - Page 14

post #196 of 771
Note to Paul_in_Maryland:

I love it when people do a little lateral thinking with gear. Your story with the sub and the Mark IV is perfect. As a career working musician, I've had to do things like that zillions of times WHILE ON STAGE. The show must go on.

Good onya Paul. Now please me why all your headphones are closed....
post #197 of 771
Quote:
Originally Posted by ddoingwell View Post
Note to Paul_in_Maryland:

Good onya Paul. Now please me why all your headphones are closed....
So I won't disturb fellow rider on the bus or train, coworkers in my office, or a family member who may be working on a computer near mine.

True, there are times when I could listen alone on, say, an AKG 701. But by standardizing on closed phones, I keep my collection small and versatile.
post #198 of 771
Quote:
Originally Posted by gjsi View Post
thanks a lot paul!

so is it safe to say that the hotaudio's 40 mark IV is the most versatile audio equipment hes offering?
Yes, together with his PCM2702-based Supreme (the DAC formerly known as Heaven).
post #199 of 771

Just bought my second Mark IV

...on eBay. Hey--after moving my "home" Mark IV to work, what was I to do?
I guess this means I'll never own the Supreme.
post #200 of 771
The TPA61020a2 amp w/ Digital Vol and Balance control just arrived about 20 minutes ago. Paid around 11PM on the 2nd, Dave shipped it the 3rd, and it made to NJ today. Great communication throughout, so not to but I've gotta say that Dave's great with the customer service.

Construction is solid, it's about the size of a HotUSB1 + room for a 9V battery (I could post pictures if anyone really would like to see it). The volume control confused me--counterclockwise is louder, so I surprised myself when I first turned it on.

I've got a deadline bearing down on me so I'm gonna keep this short:

Right out of the box: There is a very subtle bump (because it doesn't sound like a pop) when the amp is turned on. Turning the pot in a full circle makes no noise/pops/etc whatsoever, so I'm pretty sure this amp counts as silent--at least, with my HFI2200s.

It sounds good. No complaints at this early stage but because I'm working no real detailed impressions either.

More to come.
post #201 of 771
Pictures are always nice

Looking forward to a full review.
post #202 of 771
A few more notes (no pictures this time, on my way out to the bar ):

This pushes my 2200s loud. Technically to ear bleed level--although it doesn't sound fatiguing in the least. When I took off the phones (after settling on 1 click above 1/2, windows vol 100%, -10dB in Foobar) I was astounded by how loud they sounded sitting on the couch. Oh, how sweetly seductive volume can be.

I like what I hear so far. The digital control is great and so far I haven't been able to find any channel imbalance at lower levels. More details as it burns in, et al.

I'll see how my drunk audition goes in a few hours
post #203 of 771
lol, yes "sweetly seductive"....

Sometime I can hear my headphones in a different room... and it makes me think, is that a wise level to be listening too ????

but still it sounds so good to me
post #204 of 771

Question for Hotaudio40

I already have a headphone amp and am interested in using HotUSB1 as DAC only. Can I connect HotUSB1 to my amp using 1/8 to RCA stereo cable? Is there any danger in doing this - kinda double amping, connecting an amp to another? Thanks.
post #205 of 771
Yes, you can connect the HOTUSB1 to an amp. No danger at all.

In fact you can connect any of my DACs to amplifiers, both headphone amps and power amps.

Thanks,
Dave
post #206 of 771
Man the SUPREME PCM2702 went up in price again, just when I was getting ready to order.

Anyone recommend these DACs for a guy who likes music bright, detailed, good imaging and soundstage, tight, fast, taut bass...for mostly rock/pop? I don't want clinical cold sound, but I don't want overly warm sound either. I need neutral, open, transparent, nuanced type of sound.
post #207 of 771
Quote:
Originally Posted by Pariah1 View Post
Man the SUPREME PCM2702 went up in price again, just when I was getting ready to order.

Anyone recommend these DACs for a guy who likes music bright, detailed, good imaging and soundstage, tight, fast, taut bass...for mostly rock/pop? I don't want clinical cold sound, but I don't want overly warm sound either. I need neutral, open, transparent, nuanced type of sound.
Pariah, I suggest you email Dave directly; he's more than willing to go the extra yard for the customer, and in my experience, he's also more about service/product than he is about absolute price-point. I don't have one of his DACs (yet) but I do have the top-of-his-range portable headphone amp and it's a peach. You won't be disappointed.

My review/commentary on the above noted amp will be forthcoming...probably a few weeks off but I really enjoy what I'm hearing. One short comment I will make now is that it makes mediocre headphones blossom into something more than they were before, and it brings a real sense of emotion to my notoriously fussy AKG K501s.

Cheers lads.
Don
post #208 of 771
Quote:
Originally Posted by hotaudio40 View Post
Yes, you can connect the HOTUSB1 to an amp. No danger at all.

In fact you can connect any of my DACs to amplifiers, both headphone amps and power amps.

Thanks,
Dave
Thanks for your response. I have another question. What would result in better sound quality: 1) connecting hotUSB1 to headphone amp with 1/8 to RCA stereo cable, or 2) connecting Mark IV (using RCA out) to headphone amp with RCA stereo to RCA stereo cable?

Am I correct in thinking that connecting hotUSB1 to an amp is like connecting iPod headphone jack to an amp, whereas connecting Mark IV (RCA out) to an amp is like connecting iPod's line-out (dock connector) to an amp?

Thanks.
post #209 of 771
Well it doesn't have as much to do with the cable as it does with the MAXIMUM VOLTAGE RMS.

In the case of the HOTUSB1 the maximum Voltage RMS is .62 Volts giving 12 mWatts into 32 ohms.

In the case of the MARK IV the maximum Voltage RMS is 1.55 Volts giving 75 mWatts into 32 ohms.

Now the power output is really not important when driving amplifiers, but the voltage can be depending on the gain of the amplifier.

If the amplifier has lots of gain, above 12dB, then the HOTUSB1 or the MARK IV would both work great.

If the amplifier has less then 12 dB of gain then I'd only recommend the MARK IV or SUPREME for driving the amplifier.

And this goes for Power Amplifiers as well as headphone amplifiers.

Not to say that the cable is not important because it is Very important and a RCA cable will outperform a 3.5mm to RCA cable 99% of the time for sure.

But the more important factor is the gain of the amplifier.

I would recommend the MARK IV over the HOTUSB1 for driving any amplifiers period and not just because it has the RCA outputs, but because it also has the higher output voltage thereby giving you plenty of gain to play with.

hotaudio40
post #210 of 771
Big full review of the TPA6120 amp with free puppies and whatnot forthcoming (when I actually get a chance to listen to some music, being busy sucks), but I wanted to expand on one of my previous statements.

The amp is, more or less, silent with my Ultrasone HFI 2200s. If I turn it up all the way with no music I can just make out this subtle background noise, so it's not as silent as I originally thought. If the heat is on in the house though, the air blowing into my room obscures it--so it's really that quiet.

However, with my JVC HA-RX700s there's a noticeable hiss as soon as the amp is on. It lasts throughout the entire volume range. I can't hear the hiss if music is playing, at least, at listening levels. If the amp is turned down all the way, to only a few steps above silent (it varies with how loud the song is, but rarely over 3 steps), I can make out the hiss with music on--but the music is too low at that point to for practical listening.

I don't have anything more sensitive to test with, maybe Ddoingwell has something? For practical use for me it's a non-issue, but it could be an issue for others.
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Headphone Amps (full-size)
Head-Fi.org › Forums › Equipment Forums › Headphone Amps (full-size) › hotaudio40 's amps