Do these provide 250 or 660 ohms of power for headphones?

Well, ohms don't measure power. Ohms are a measure of impedance. With that said, AKG bills the HP4E as providing 600 Ohms of output impedance. I use it with 600 Ohm AKG K240s (the old Austrian made ones) and it works great.

Can I connect it to tv?

Yes. However, you will need some sort of adapter/cable depending on what output your TV has. If your TV has a 1/8" stereo headphone output get a 1/8" to stereo 1/4" inch "Y" cable.

Can I run an instrument thru it?

I have to disagree with the other answers here. Absolutely, you can get stellar tone using this as an amplifier for your instrument - but with a few considerations / adjustments. I have plugged my Rickenbacker 4003 bass into the HP4E and obtained beautiful tone. This is due to this AKG's strong point - it's excellent stereo amplifiers - which are warm and clear - unparalleled actually in my experience for headphone amps. But since there is no EQ of any kind on the AKG, you would want to use an equalizer before plugging in. Even better, I used a Tech 21 Sansamp VT which gave me both excellent tone (since its EQ is designed for bass) and excellent impedance matching. It might be limiting for guitar, but again - this unit's strong point is its amplifiers - they're wonderful. And since it has 1/4 inch inputs, you can plug your instrument straight in and with good headphones you'll hear the quality.

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AKG HP4E 4-Ch Headphone Amplifier

Product ID: 44448726

Details

Brand
AKG
Item dimensions L x W x H
8.9 x 8.55 x
Manufacturer
AKG
Material
metal
Number of Channels
4

🎧4 independent high-power stereo amps

🔌Dual 1/4" & 1/8" outputs per channel

🎚️2 stereo inputs with front panel switches

E£ 32632

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Description

🎧 Amplify your sound, elevate your session—because your headphones deserve the best.

POWER YOUR CREW - Four channels deliver pristine, reference-grade amplification for every headphone in your studio.
RUGGED COMPACT - Durable metal half-rack chassis fits perfectly in any professional setup without hogging space.
PLUG PLAY FREEDOM - Each channel sports both 1/4" and 1/8" outputs—ditch adapters and connect effortlessly.
INSTANT INPUT SWITCHING - Front panel toggles let you switch between two stereo inputs in a snap, keeping your workflow seamless.
STUDIO READY RELIABILITY - Top-tier AKG components ensure crystal-clear sound even at extreme volume levels—no compromises.

The AKG HP4E is a professional-grade 4-channel headphone amplifier featuring four independent high-power stereo amps, dual 1/4" and 1/8" outputs per channel, and two stereo inputs with front panel switches. Housed in a rugged metal half-rack chassis, it delivers reliable, reference-quality sound for any headphones at high volumes, making it an essential tool for recording studios and audio professionals.

Specifications

ASIN	B01MUUG22U
Best Sellers Rank	#215,968 in Electronics ( See Top 100 in Electronics ) #302 in Headphone Amps
Brand Name	AKG
Customer Reviews	4.5 4.5 out of 5 stars (32)
Global Trade Identification Number	00885038038825
Included Components	Power Supply, Quick Set Up Guide
Item Dimensions	8.9 x 8.55 x 3.45 inches
Item Weight	2.12 Pounds
Manufacturer	AKG
Material Type	metal
Model	HP4E
Number of Channels	4
Part Number	3450H00010
UPC	885038038825
Unit Count	1.00 Count
Warranty Description	2-Year Warranty

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E£ 32632

Duties & taxes included

In stock

Sold byAmazon EGYPTDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to EGYPT.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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