CHeap Headphone amp

[BrettB]

Hi all,

This is an easy one: what is the cheaspest headphone amp available? I don't need mulitiple inputs?

any thoughts?

[Garry Sharp]

Behringer HA4700 or the Samson one - prices very similar.

[Twitch]

Rolls, Art and Samson make a 4 channel headphone amp which is the cheapest you can buy either one for $59.99 thru any music outlet store(musiciansfriend.com, zzsounds.com, etc..)

[Chip Hitchens]

How many outputs? If you're only talking about one, I made one of these for about $25 including the case and it smokes anything under $100. Burr Browns baby!

http://headwize.com/projects/showfil...=cmoy2_prj.htm

[Twitch]

I'm talking about 4 outputs

[Leeking]

I have the Rolls HA43 (4outputs) ~$55 ... good stuff...

nowadays Art, Yorkville has the exact copy for around $30....

[crankz1]

If you are the DIY type and have an old stereo receiver you can build a multi-headphone amp.

Build a headphone patch panel that consists of 1/4" stereo jacks, as many as you need to get a headphone feed to everybody.

Wire each jack through a separate 2.2K 1/2W resistor in series with the positive leads for L and R channels.
With the 2.2K common resistor value you should be able to run headphones with impedances from about 4 ohms on up to a couple hundred ohms without any problems. Good idea to use impedance matched cans, though if you don't install separate volume control L-pads as described below, or the guy with the 150 ohm cans will have lower volume while the guy with the 8 ohm cans will get blasted.

Wire the paralleled jacks and resistors to the SPKR terminals of the unit.

You can easily and safely run at least 20 sets of headphones maximum this way, and most don't need that many.

If you need separate volume control for each headset simply wire in L pads, 8 to 16 ohm wire-wound dual pots designed for stereo speaker fading which you wire in after the resistors to each headphone jack.
L-Pad goes between each resistor and it's corresponding output jack, pin 1 to hot, pin 3 to Common and pin 2 to the jack output.
Must be done to each channel.

[BrettB]

sorry, I think I'm not handy enough for that

I'll go for the Behringer one, thx for all the hints everyone!