New Meier Corda Rock - Page 2

Looks Great!

What about power?

Now i have Swing. Is the Rock much more powerfull than Swing?

there is Classic specs:

• Maximum output current: 500 mA / channel
• Maximum gain factor: 4,9 x (+14 dB)
• With a source signal of 2V rms the limiting factor normally is the gain factor. Maximum output voltage becomes 9,8 V rms.
• At 600 Ohm: 160 mW / channel
• At 300 Ohm: 320 mW / channel
• At 50 Ohm: 1.9 W / channel
• At 30 Ohm: 3.2 W / channel

What are same specs for Rock and Swing?

Quote:

Originally Posted by Breikku 

Looks Great!

 

What about power?

 

Now i have Swing. Is the Rock much more powerfull than Swing?

 

 

there is Classic specs:

 

• Maximum output current: 500 mA / channel
• Maximum gain factor: 4,9 x (+14 dB)
• With a source signal of 2V rms the limiting factor normally is the gain factor. Maximum output voltage becomes 9,8 V rms.
• At 600 Ohm: 160 mW / channel
• At 300 Ohm: 320 mW / channel
• At 50 Ohm: 1.9 W / channel
• At 30 Ohm: 3.2 W / channel

 

 

What are same specs for Rock and Swing?

Hello, where did you find these specs for the Classic ? I looked for them on the web site, but did not see these. Thanks

Dear Headfellows,

just a short note that the amp is available now!

:-)

Jan
 

Anyone bought this? Love to buy one but I dont know how good this is with sensitive IEM. I want to pair this with ER-4S and XBA-4. It would be great if it can handle the k702 but dont really care if it doesnt, right now my first priority is to fine a nice desktop option for ER-4S/XBA-4.

I have just received the rock yesterday. The overall build quality is great.

I can't believe it have so much power to drive the HD800 in such small size.

The rock consist of one RCA input and one 3.5mm input.

As it use the switching power, it accepts 85V to 265V AC input, which means you can use it all over the world.

One interesting thing is its also accept DC power from 85V to 370V.

There is a high/low gain selection at the bottom of the rock. 

Having try both high and low gain selection with my Denon D7000, 

no background noise could be detected~~

I only connect the rock with the line out of my old diskman yesterday.

I hope I will have more time tonight to test the rock with a better sources. 

Jerry, I look forward to your impressions.

(Rasmushorn, can you please correct the spelling of the verb in this thread title? The current spelling  is frustrating to read. It is also just one vowel away from something, well, kind of gross..)

I finally have some little time tonight to test the rock in my home system. The connection is same as my signature below, while the HA5000anv is replaced by the rock.

It seems lot of us are very interested how's the rock will perform when connect to IEM, so the test tonight will be concentrated on the performance of UE11pro pair with the rock.

As the rock only have one 6.3mm output,  Audio-Technica AT501cs 6.3mm to 3.5mm adaptor are being used. 

Low Gain:

I originally expected it is the best setting when connect with UE11pro, unfortunately I was wrong.

Similar to some of the amplifier that I owned currently (HA5000anv) and previously (Luxman P-1u) which famous in driving low impedance headphone, all of them can not drive the UE11pro well.

The rock with low gain setting makes the UE11pro giving too much bass, tonal balance and clarity have been lost. 

I can not hear any hiss at this setting, while it have a little channel imbalance in very low volume level, but become balance again when achieve normal listen volume

High Gain:

This setting gives better performance than the low gain setting. The bass are being well controlled, while tonal balance and clarity are back too. The sound stage is also much wider.

Unfortunately, hiss is more obviously at this setting. And channel imbalance is present in normal listen volume, imaging have a little shifted to the right although it is not obvious.  

High Gain with 22ohm output impedance:

In according to the operation manual, when the bridge of the high/low gain selection is left out completely, the gain will be set to high and the output impedance increases from 4 to 22ohm.

I remember Corda Opera and Corda Symphony have similar function too~~. This setting gives similar sound with high gain only setting, however hiss will become disappear when music comes up and channel imbalance is solved too~~.

It is very surprised that the rock can drive the UE11pro so well with this setting and I personally prefer the rock over the HA500anv and P-1u with my UE11pro, of course it will be a different story when driving full-sized headphone

Cheers!

Thanks for the test. It's interesting (and a bit strange) that your UE11 (18 ohm) works better on high gain...

Quote:

Originally Posted by Jerry_Banana 

I finally have some little time tonight to test the rock in my home system. The connection is same as my signature below, while the HA5000anv is replaced by the rock.

 

........... 

I got one of these last week, and so far I am very pleased. I got it to drive Denon AH-D7000 and Grado SR80i neither of which is hard to drive, but I really like how this amp handles these headphones. It seems to make the bass a little more present in the Grado's and makes the Denon's sound over all better. 

I Have tried the jumpers on High Gain, Low Gain, and removed. So far I think no jumpers is the ticket for me. 

Great little amp, and very pretty too!!

rasmushorn, Jerry, Heathen999: does the Rock run hot at all? Would you be comfortable placing something on top of it?