Fiio amps? - Page 7

Superb, mine arrived this morning having taken 9 days to get here China - What can I say but WOW !

£6.00 including carriage was a raving bargain and well worth the money.

I've been using an iPod Classic 80gb unamped with a pair of Senn PX-100's, I've been quite happy with the SQ, but the Fiio certainly makes a difference.

Haha Same with me last time Only when I said I will contact eBay if not reply me, the seller confirm the shipment.

Received this a few days ago, my first amp.

First impression was that the amp just gave the sound a bass boost, which was a bit too much for me. But as I listened more I'm liking the sound more, it sounds 'bigger' and it's more fun on rock tracks than straight from my D2 (I tried to adjust volume levels for a fair test). However I do think as a result it can sound a bit muddled at times, missing the clarity of the D2.

However probably the deal breaker for me is the massive amount of hiss from this amp. This is the first time I've been bothered about hiss on any DAP ever, it's actually loud enough to be bothering on quiet tracks which is not acceptable. But, what can I ask for at this price

EDIT: Forgot to mention that this is with my Freqshows, which are pretty damn sensitive, so YMMV.

No hiss at all with my Fiio when using it with a pair of Senn PX-100's.

I'd like to mention that this is similar to my previous impressions... brings out a rounder sound, but hisses very bad on the freQshows.

I won and paid for one (from marchrisdealer) on 6/19, I just received it today (7/05), and it was shipped from Hong Kong on 6/23. At no time was there any communication from the seller, just the amp arrived, in fine cosmetic condition and good working order. Since this is my second, I can say that it sounds the same brand new as the first one did. BTW, I'm in the US as well. If your order fulfillment runs parallel to mine, your FiiO should be arriving in about a week from today.

The FiiO hisses a lot with my PortaPro.

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The description states it can drive headphones up to 300-ohm... But, it's powered by a single AAA battery. Has anyone tried one of these amps with 300-ohm headphones?

I've used the FiiO with a variety of phones and sources, including KSC75 phones and the headphone out of my laptop (which the SE530 reveals to have a noticeable, though low, level of hiss). With none of my sources, does the FiiO, KSC75 pair give any noticeable hiss, even at full source volume. Are the Porta Pro known to be much more sensitive than the KSC75?

Using SE530 (which are very sensitive), I'm finding that the level of hiss using the FiiO varies with the source, rather than being attributable to the FiiO (other than the FiiO amplifying what is already in the source).

Yet another example of how the same audio component can yield different results in different rigs and ears.

I've tried the FiiO with HD600 (300 ohm), HD650(300 ohm), DT531 (250 ohm), and DT831 (250 ohm). I prefer listening using these phones with the FiiO over using them with a few well-known, stationary (wall-powered) amps costing 15 - 20 times the price of the FiiO. Of the four higher-impedance phones above, I'd say that my favorite with the FiiO is the HD600. Since I mainly use the FiiO at work, I use it with Yuin PK1 buds to avoid sound leakage into adjoining cubicles. From my very modest work rig (including the FiiO), I get a level of sound that I consider to be a genuine treat to listen to.

When I have fiio plugged into D2, and headphones into fiio, and turn on the D2, I have measured a DC spike of about 1V. Isn't that way way too much? I just don't get why it is like this. I'm afraid to use it with my headphones now.

If I don't have the fiio between headphones and D2 I get no DC spike.

Any suggestions on how to proceed?

EDIT: I measured the battery itself, and it puts out 1.36V while the marking on the battery says 1.2V. Can this have something to do with it?

Very interested in the HD600 and FiiO pairing. Care to tell us more about that combo? What did you compare it with, how it sounds etc... Thanks

Spike on Start Up

RE : Spike on Start Up.
If your source produces a spike when it starts don't plug the FiiO in until after the source is running.
Start your source at its lowest volume setting.
It is not for nothing that high end home theater receivers do a soft start by going into standby mode with the speakers disconnected from the output. This is because there is a power surge when the source powers up its power supply.
If your source produces a power surge at its output of course an external amplifier will amplify the surge.
In the portable situation the amount of energy involved is limited by the power supply which in turn is a reflection of the internal resistance of the batteries.
That's why a 1.36 volt rechargeable will operate equipment designed for 1.5 v zinc batteries

I just recently got this from Ebay and it doesn't work.
Now the seller wants me to ship it back to Hong Kong for a replacement.

The shipping will cost me just under the total price for the player.
What a rip off, what should I do?

I think charge back is the only option as they won't budge. . .