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Amps that can drive the HiFiMan HE-6 planar headphones - Page 171

post #2551 of 3230
Quote:
Originally Posted by Kallbo View Post

Hello!

Anyone tried a KRAudio amp with the HE-6?
Wondering if my VA 340i would be a good match with the HE-6.
have a spec sheet?
post #2552 of 3230

KR Audio Antares VA 340i

KR Audio Antares VA 340i
KR Audio Antares VA 340i
Product Code: KR Audio Antares VA 340i
Availability: In Stock
Price: 63,000,- 

 

Antares VA 340

Integreret single-ended forstærker med 3 linie-indgange og fjernbetjent volumenkontrol.

Bestykket med trioden 300 BXLS og yder 20 W pr kanal.

KR Audio Antares 340

Type

Single-ended tube amplifier - pure class A, zero feedback

Output Tubes

2 x KR 300BXLS

Output Power

2 x 20 Watts RMS (THD=3%)

Bandwidth

20 Hz-20 kHz (-3dB)

Output Impedance

4, 8 Ohms

Input

4 x 0.75V RMS / 47 kOhms at 20 W

Dimensions (w/h/d)

53.5 x 25.5 x 41.5 cm

Weight

Approx. 36kg

post #2553 of 3230
If you own congrats.
Very nice looking amp
If youbdo not. Is that price YEN or pasos
LOL
AL
post #2554 of 3230

Thanks gjc11028!

 

I do. Price is about 7k €.

 

From sixmoon review:

 

The VA340 Integrated in fact is a synergy of the solid-state KR P150 stereo pre-amplifier and the Antares power amplifier, leading to a four-input integrated with 1 VRMS sensitivity and an input impedance of 47Kohm on each source and a REC output with a 0.5 VRMS level. The claimed frequency response is 10Hz to 100KHz. The output stage is fully dual mono and employs KR's signature hybrid design of MOSFETs and tubes, in this case KR's 300BXSL delivering 20wpc.

post #2555 of 3230
Quote:
Originally Posted by Kallbo View Post
 

Thanks gjc11028!

 

I do. Price is about 7k €.

 

From sixmoon review:

 

The VA340 Integrated in fact is a synergy of the solid-state KR P150 stereo pre-amplifier and the Antares power amplifier, leading to a four-input integrated with 1 VRMS sensitivity and an input impedance of 47Kohm on each source and a REC output with a 0.5 VRMS level. The claimed frequency response is 10Hz to 100KHz. The output stage is fully dual mono and employs KR's signature hybrid design of MOSFETs and tubes, in this case KR's 300BXSL delivering 20wpc.

That sounds like a very well designed amp. Congrats on the find and purchase :)

post #2556 of 3230
Can someone tell me what is an He adapter and is this needed to connect to a SS speaker amp, or just to a tube amp.
Thanks
post #2557 of 3230
The HE Adapter has a resistor network, so that the amp sees a load of 8 Ohm. Not necessary for SS amps up to some 50W/channel. But on high power amps good to protect the phone and on tube amps to protect the amplifier.
post #2558 of 3230

Not needed for SS amps "at all".  More so for tube amps.  

post #2559 of 3230
Prepoman is correct. But with larger wattage Amps it may be needed to achieve more volume control. .meaning allow the volume to be say 12 o clock for it to be loud as opposed to 9 and loud. I would not buy the he adaptor .
It. Does effect the sound . , but there is some applications where a resister box or network is needed . This would be the case of an amp that has a noise floor issue with headphones. Read this thread and the thread of speaker amps for headphones. . Put post,s up with questions and help will endsue .

Al
post #2560 of 3230
Quote:
Originally Posted by ALRAINBOW View Post

Prepoman is correct. But with larger wattage Amps it may be needed to achieve more volume control. .meaning allow the volume to be say 12 o clock for it to be loud as opposed to 9 and loud. I would not buy the he adaptor .
It. Does effect the sound . , but there is some applications where a resister box or network is needed . This would be the case of an amp that has a noise floor issue with headphones. Read this thread and the thread of speaker amps for headphones. . Put post,s up with questions and help will endsue .

Al

 

Al,

 

First Bold:

The wattage has nothing to do with the loudness.  What you are talking about here is the gain.  If the amp has a high gain setting then you won't have much headroom on the v-control.  

 

Second Bold:

This is correct.  Also has to do with very high gain setting. The more gain you have the more noise you would have.  Low gain amps will have a lower noise floor - typically.

post #2561 of 3230
Quote:
Originally Posted by preproman View Post
 

Low gain amps will have a lower noise floor - typically.

What would be considered low gain dB-wise? Can you name a few amps as example? :beerchug: 

post #2562 of 3230

The Emotiva amps have high gian.  you cfan get hissss with certain headphones.  Some First Watts amps have very low gain, you have to have a preamp that has a high enough gain - on some / not all.

post #2563 of 3230
Quote:
Originally Posted by preproman View Post
 

The Emotiva amps have high gian.  you cfan get hissss with certain headphones.  Some First Watts amps have very low gain, you have to have a preamp that has a high enough gain - on some / not all.

 

Using Emo DC-1 with Emo UPA-200 amp, I am getting zero hissss. Did try with HE-400, HD650 and HD800. No noise floor at all, may be amp and preamp pairing also effects the hissss sound. 

 

on other hand if I use Lyr as preamp, I get hissss even with HE-6

post #2564 of 3230

I am not sure why people keep saying Emotiva amps have high gain. Based on the specifications the gain seems pretty average compared to other speaker amps.

post #2565 of 3230
Quote:
Originally Posted by Gneiss View Post
 

I am not sure why people keep saying Emotiva amps have high gain. Based on the specifications the gain seems pretty average compared to other speaker amps.

Given the noise, coupled with 29dB gain, it is excessive. I have some inefficient speakers in the mid-80dB sensitivity range and you can hear a hiss clear across the room with the XPA-5, which is not their entry-level series.

 

EDIT: I have two XPA-5's too, so it isn't an anomaly.


Edited by brunk - 2/24/14 at 5:20pm
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