N-AUDIO HA400 Headphone amplifier 4 channel

Plug In, Rock Out with the Joe Satriani amPlug headphone amp

The Joe Satriani signature model is the latest addition to our incredibly popular amPlug series of headphone guitar amps!

• Joe's signature lead tone with your choice of delay on or off

• Distortion tone with superb dynamic response, inspired by the Satchurator

• Analog-style delay with Joe's filter & EQ, inherited from the Time Machine

• Plugs straight into your electric guitar, so you can instantly enjoy great sound through your headphones

• Convenient and portable with up to 11 hours of battery operation

• AUX input jack lets you jam along to tunes on your CD/MP3 player

The amPlug series of palm-sized headphone guitar amps make it easy to enjoy great guitar/bass sounds at home, in your room, or anywhere. This lineup is now joined by the amPlug Joe Satriani signature model, which borrows freely from the VOX/Joe Satriani line of signature pedal effects.

• Power supply: AAA batteries (x 2)

• Battery life (FX on):
  Zinc-carbon batteries: approximately 3 hours
  Alkaline batteries: approximately 11 hours

• Dimensions (W x D x H): 86 x 80 x 31mm/3.39" x 3.15" x 1.22"

• Weight: 40 g/1.41 oz. (not including batteries)

• Included items: Two AAA batteries (for verifying operation)

INPUT:    1 audio stereo, 1Vpp/50kΩ on a 6.5mm stereo phone socket.
OUTPUTS:    5 audio stereo, 500mW/8Ω on 6.5mm stereo phone sockets.
AUDIO BANDWIDTH (-3dB):    25kHz.
CONTROL:    5 stereo output level controls (front), 1 mono switch (rear).
GAIN RANGE:    -60dB to +10dB.
S/N RATIO:    78dB.
THD:    0.08% @100mW.
POWER SOURCE:    12V DC, 370mA nom, 1A max.
DIMENSIONS:    16.5cm x 12cm x 4.5cm (6.5” x 4.72” x 1.77”) W, D, H.
WEIGHT:    0.68kg (1.5lbs) approx.
ACCESSORIES:    12V DC power supply.
OPTIONS:    RK-1 19" rack adapter.

The PHDA02 - a reference class headphone amplifier with Stereo, Mono, and Dual Mono operation modes.

In Stereo mode, the L/R input signal is fed to the left and right earphones while the volume level is set by the Stereo/Left control. The front panel inputs provide simultaneous connection of two headphones in parallel. In Mono mode, the left and right channels are summed, and the resulting mono signal is fed to both the left and right earphones. Again, volume is governed by the Stereo/Left control. In Dual Mono mode, the left and right channels can be used independently with individual level controls for the left and right earphones.

The PHDA02 operates with all headphones with an impedance of 8 up to 200 Ohms. Impedance matching is achieved by a specially designed switchable transformer. Uncommon and costly, this solution provides superior performance, dynamic range, and signal-to-noise ratio at all loads.

Combo input sockets allow for balanced XLR and unbalanced TS headphone connection while parallel XLR outputs facilitate daisy chaining multiple units. The integrated power supply operates with mains from 100 VAC to 240 VAC.

The PHDA02 is equipped with low-noise op amps, and the output amplifiers' discrete power transistors are mounted on heatsinks. Dimensions are 1 U 9.5“.

Overview

With Sennheiserʼs HDVD 800, sound is perfect. The HDVD 800 is able to connect with digital sources and is equipped with a high-quality Burr-Brown digital/analog converter (DAC) that converts digital audio data into analog signals with a resolution of 24 bits and a sampling rate of up to 192 kHz. This enables the HDVD 800 to transmit the entire frequency spectrum of high-end audio sources without any loss of frequencies.

In addition to the symmetrical inputs, the HDVD 800 also has an asymmetrical input socket; incoming signals are symmetrized before further processing takes place. Digital sources can be connected to the rear of the unit via an XLR (AES/EBU) input, optical and coaxial (S/PDIF) digital inputs or USB. All digital inputs accept signals up to 24 bit at 192 KHz*. Designed and manufactured in Germany, this high-end, solid-state amplifier harmonize perfectly and deliver an ultimate acoustic performance when paired with any of Sennheiserʼs audiophile headphones.

Features
D/A transducer for all common formats up to 24 bit / 192 kHz
D/A transducer can be used for CD and DVD players
AES/BU, S/PDIF, USB inputs
Symmetrical (XLR) and asymmetrical (RCA) analog inputs
Symmetrical output
Sockets for four sets of headphones (two of which symmetrical)

• Model Name: LDHPA1
• Product Type: headphone amplifier
• Type: 1-channel stereo
• Inputs: Main Input (Stereo), 1 x Aux In (Stereo)
• Input Connections: XLR-F (L + R Input, balanced), 3.5 mm stereo jack (Aux In)
• Input Impedance: 6 kOhm (XLR In), 10 kOhm (3.5 mm jack)
• Input Sensitivity: 3 dBu (XLR In), -6 dBV (3.5 mm jack)
• Max. Input Level: 16 dBu (XLR In), 7 dBV (3.5 mm jack)
• Protection Circuits: Audio Limiter, Max. Input leveling, Power OFF -Mute relay
• Headphone Outputs: 1
• Headphone Output Connectors: 3.5 mm stereo jack
• Power Output: 2 x 1.65 Vrms / 1% THD 33 Ohm Load
• Minimal Connected Impedance per Channel: 16 ohms
• Frequency Response: 20 Hz - 40,000 Hz
• THD 1 kHz Sine: 0.04%
• Controls: Power/Volume, Balance L/R, Stereo/Mono (Focus) switch,
• Indicators: Signal (Green) / Peak (Amber), Battery (low battery: red) / Power LED (Power ON: green)
• Power Supply: 9 V DC block battery, DC jack
• Operating Voltage: 9 V DC
• Power Consumption: Nom. 70 mA / Max. 150 mA
• Housing Material: plastic
• Housing Surface: soft-touch
• Housing Colour: black
• Width: 80 mm
• Height: 42.5 mm
• Depth: 133 mm
• Accessories (included): belt clip, 1 m 3.5 mm stereo jack cable