Studio Recording

Advice on buying headphones for digital piano

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LucaCavaliere

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Opening post by LucaCavaliere

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Hello everyone

I would like some advice on purchasing a good pair of headphones to use with my digital piano.

Since 2003, I have been using Sennheiser HD590s (Imp. 120 Ohm, frequency response 12-38000 Hz), which I have always been very satisfied with. In the sense that the sound of my Kawai CA1200 is even more beautiful in headphones than through its built-in amplification in the room.

The fact is that, five years after 2003, I had to have (fortunately) the left speaker repaired, but for a few months now the left speaker has been buzzing again. The defect is markedly evident with the mid-low sounds of the piano. I must say that I also use these headphones for listening to music from Hi-Fi, and in this case, when listening to vocal, symphonic, or chamber music, I almost don't notice the defect (though, knowing the defect is there, I "make an effort" and then I manage to hear problems even with Hi-Fi listening. The annoyance is also clearly felt in this case if I listen to piano pieces, but not as terribly as when I use the headphones for my piano).

My idea (banal) is that I ruined the headphones myself by using them with the piano: always on the left speaker because that is where the mid-lows are directed most (due to the stereophonic principle that, sitting at the piano, the bass comes from the left).

Now I would like to replace the headphones. I am attracted to the Sennheiser HD598 (Imp. 50 Ohm, frequency response 12-38500 Hz) which seem equivalent to me if not better, but I fear (I am almost certain) that I will ruin those too in a short time.

I am asking you:

what does the difference in impedance between these two headphones entail?

Perhaps a lower impedance should lead me to hope that they are more "robust" headphones?

[I have never understood for which type of user it is useful to aim for high impedance and for whom it is useful to aim for low impedance!... whoever can, please enlighten me!!!]

Aside from the HD598… Can you recommend some headphones (any brand/model/budget) that are tough when it comes to taking hits from heavy octave strikes ff... but also have a sound performance equivalent to those I have used until yesterday?

Thank you all!

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Reply 3 by Thesimon

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The choice of one headphone over another also depends heavily on the impedance characteristics of the amplifier to which they are connected. You should understand what the output impedance of your digital piano is. Normally, Hi-Fi amplifiers are able to handle very high impedances. In essence, a headphone with very high impedance reproduces all frequencies very accurately at the expense of volume; this is why they require a good amplifier (if you were to connect a high-impedance headphone to a portable MP3 player, you wouldn't hear anything); conversely, low impedances guarantee more volume but are very fallible when analyzed in frequency. Normally, good amplifiers have low output impedance. Headphones should always have a higher impedance than the amplifier. In any case, impedance must then be considered according to the signal frequency. In the audio field, however, inductive and capacitive phenomena are negligible compared to resistive ones; therefore, one often speaks of resistive impedance, and the signal frequencies within a certain frequency range are not that important. I would use standard headphones like the AKG K121 Studio 55 Ohm... They don't cost too much and are an affordable standard that adapts well to all contexts.

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Reply 4 by LucaCavaliere

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Thanks Exit and Simone!... I have read the previous discussions.

TheSimon wrote:

In essence, a headphone with very high impedance reproduces all frequencies very accurately at the expense of volume; that is why they require a good amplifier

So from these words, it seems to me I understand that high impedance does not mean delicate headphones, and therefore I haven't necessarily broken my current headphones by using them with the piano... or am I wrong?

the Sennheiser HD598, which I am leaning towards, if they have a good sound like the ones I have used so far, that is very fine with me.

My situation is not that of someone who studies on a digital piano and "builds their chops," but then, has to deal with valid grand pianos in ensemble music or playing in public, etc.

I am someone who plays only for personal recreation (and often, it must be said, much more with headphones than without). So if my headphone is "for listening" and not for monitoring, then it's the right thing for me.

The important thing is that it isn't a tiny delicate object.

And I would like to know what the parameter is to understand the "robustness" (acoustic) of a headphone (if such a parameter exists)

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Reply 5 by Thesimon

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Impedance represents the hindrance to the passage of a signal (in this case, it is more of a resistive impedance). The higher the impedance, the lower the signal volume will be, but as a consequence, it will be more filtered and generally of higher quality. All of this has nothing to do with the robustness of the headphones, which depends on the materials used to construct the drivers.

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Reply 6 by LucaCavaliere

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Thank you so much for everything Simone!... very clear

now I can navigate more consciously "on my own" through my doubts... until the final decision!

bye

Luca

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Reply 8 by nancy

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I'm starting this topic because I found it very interesting

on my Casio GP 300 it says: "standard stereo PHONES headphone jack" and so I can't understand the impedance of the outputs.

at the moment I use AKG 270 MKII which are becoming increasingly "glassy" and I would like to replace them (since they are many years old) with something more comfortable (the AKGs are too big for me), closed-back to isolate myself from the children when I study. At the moment when I use the headphones I have to turn up the volume quite a bit and they are 75 ohms, but I was reading that AKGs tend to need more drive compared to other brands at the same impedance (??)
i was thinking about the Beyerdynamic DT 770 80 ohm... and I was wondering if I will need a headphone amp. Do you think the Casio would also handle 250 ohms? Still without a headphone amp.....

valid alternatives in your opinion??

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Reply 10 by nancy

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..are you referring to the beyerdynamics?

I bought them but I'm still breaking them in. ...at the moment, compared to the AKGs I had, their only advantage is comfort. ...but keep in mind that I use them without a headphone amp, so perhaps I am not getting enough value out of them!

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