[Elecraft] BHI HP-200 and other headphones

[pd0psb]

Hi Chris,

The K3 headphone amp (National LM4811) is specified at 106dB S/N ratio so
should be pretty noiseless.
Using Sennheiser HD600's here with quite high sensitivity which has no
noticable noise on the K3.
Does the hiss remain with AF gain all the way down?

A quick & dirty way to lower the residual amp noise is a small resistor
network is series with the headphone output. Not so elegant but might save
you from buying yet another headphone...

73'
Paul
PD0PSB



OE5CSP-Chris wrote:
> 
> I recently bought Yeasu lightweight headphones for the K3 and found out,
> that the K3 adds hiss with both the front and rear connectors. I have
> similar problems with the K2. At the moment I use computer headphones-
> they work nicely, but are not made for communication purposes.On the BHI
> homepage I found 8 Ohm HP-200 headphones. Is anybody using them? BHI says
> they should work pretty well with the K3, but they have actually never
> used them with a K3.
> I do not want to spend money again on headphones I can´t use with my K3!
> 
> 73, Chris-OE5CSP
> 

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