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Grapevine HeadAmp 4

HeadAmp 4

The HeadAmp 4 is a high-quality Class A headphone

ampliﬁ er designed for a wide variety of studio and live

applications. Next to the classic multi-headphone situa-

tion for recording, the HeadAmp 4 is also ideal as a:

• Reference studio ampliﬁ er

• Perfect alternative to low-quality ampliﬁ er stages in

sound cards and entry-level consoles

• Active line-level signal distributor

The HeadAmp 4 is built in Germany to SPL standards for

years of trouble-free service, using:

• Internal power supply with standard IEC connector for

easy, secure AC connection

• Highest quality potentiometers and switches from ALPS

• Double-sided PCB for maximum durability and contact

reliability

• Rugged metal casing

Key Features

• High-quality, discrete Class A headphone ampliﬁ er

circuits

• Will also power low-impedance headphones

• Handles even extremely high input levels, e.g. from other

headphone outputs

• Exceptionally low noise and distortion, especially at low

impedances

• Switchable input sensitivity

• Four output modes: Stereo, Left Channel Only, Right

Channel Only, Mono

• Rear-panel connectors for daisy-chaining multiple units

Technical Speciﬁ cations

Connectors: balanced 1/4“ TRS

Input level: +21.2 dBu (input -12 dB)

Input impedance: 10 kOhm

Output impedance: 50 Ohm

Output voltage: 600 Ohm/7.4 Veff

300 Ohm/7.1 Veff

150 Ohm/6.6 Veff

50 Ohm/5.3 Veff

Frequency response: 10 Hz-100 kHz (-0.5 dB)

THD+N:

› 95 dB

Noise:

› -90 dBu

CMRR:

› 80 dB

Output resistance: 10 Ohm

Fuse: 125 mAT

Power supply: block transformer, 5 VA

Dimensions: 19 inch, 1 U rack space

Weight: 4 lbs

SPL USA · 2498 Rikkard Dr. · Thousand Oaks, CA 91362. For further information call 805 241 5140, fax 805 435 7455, email info@spl-usa.com or visit www.spl-usa.com