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Grado RA-1 HG (High Gain Version)

High Gain A/C Powered Headphone Amplifier with Solid Mahogany Housing

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This item has been discontinued

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Product Features:
  • Grado High Gain A/C Powered Headphone Amplifier
  • Designed for state-of-the-art performance and specifically to play Grado's
  • Machined from a solid block of mahogany
  • High-current output capability
  • Convenient AC operation
  • Front-panel volume knob
  • Gold-plated stereo RCA phono line input
  • Authorized Internet Dealer
  • 1-year Manufacturer's warranty
Product Specifications:
  • Inputs: RCA
  • Outputs: 1/4" headphone jack
  • Input Impedance: 100 ohm
  • Output Impedance: 32 ohm
  • Output Power: 300mW
  • Frequency Response: 20-20,000 Hz
  • Weight: 1 lbs
  • Dimensions: 5-1/2"D x 5"W x 1-1/2"H

Headphone Amplifier Specifications

Amplifier Style
Some headphone amplifiers are designed to be portable and others are meant to be placed on a desk. This will tell you what style of amplifier this item is.
Desktop
Digital-to-Analog Converter (DAC)
A Digital-to-Analog converter (also known as a DAC) converts a digital audio signal into an analog signal. This is especially helpful for listen to music from digital sources, such as iPods and smart phones.
No
Frequency Response
The range of frequencies the amplifier will reproduce (lowest frequency to the highest). Bigger is better, meaning the wider the range, the better. The optimal range is 20 - 20,000 Hz (which is the range of human hearing).
20 - 20,000 Hz
Input Connection
This is the manner in which the headphone amplifiers receive an input audio signal.
Stereo RCA
Input Impedance
This is the input impedance of the headphone amplifier.
100 ohms
Output Connection
This is the manner in which the headphone amplifier will output the audio signal.
1/4" Plug
Number of Outputs
Some headphone amplifiers have a built-in splitter so multiple pairs of headphones can be connected to it. The number specified here is the number of headphones that can be connected to the amplifier.
1
Output Power
This is the output wattage of the headphone amplifier. It is measured in mW.
300 mW
Output Impedance
This is the output impedance of the headphone amplifier.
32 ohms
Power Requirement
This is the required way to give the unit power. Common power sources are 120V AC (Common house plugs), batteries, or a combination of the two. If the headphone amplifier uses batteries, this will list the type of batteries that are required. Please refer to the description to find out how many are required for the unit to be properly powered.
100-240V AC
Width
The width of the item from left to right (side-to-side) measured in inches.
5"
Height
The height of the item, measured from top to bottom, in inches.
1-1/2"
Depth
The front-to-rear depth of the item, in inches. If the item is angled or slanted, this value is the bottom measurement.
5-1/2"

DAC Specifications

Maximum Output Voltage
This is the maximum voltage that the amplifier or preamplifier is able to output.
Output Impedance
This is the amount of impedance that the microphone allows.
Frequency Response
The range of frequencies the speaker will reproduce (lowest frequency to the highest). Bigger is better, meaning the wider the range, the better. The optimal range is 20 - 20,000 Hz (which is the range of human hearing).
Crosstalk
Crosstalk is defined as the unwanted transfer of signals across communication channels. The higher this number is, in dB, the better crosstalk rejection the DAC is capable of.
Signal-to-Noise Ratio
This spec compares the strength of the signal to the level of background noise. A higher value indicates less background noise.
Digital Inputs
The type of digital inputs the digital-to-analog converter features.
Jitter
Jitter is a deviation in or displacement of the pulses in a high-frequency digital signal.
Line Level Outputs
The type of analog line level outputs the DAC features.
Sample Rate
Power Requirement
This is the required way to give the unit power. Common power sources are 120V AC (Common house plugs), batteries, or a combination of the two. If the headphone amplifier uses batteries, this will list the type of batteries that are required. Please refer to the description to find out how many are required for the unit to be properly powered.
100-240V AC

Specials with this Item

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Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Summary of Customer Ratings & Reviews

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Product Summary

Manufacturer

Model Number

RA1HG

Weight

5.00lbs

Internal SKU

ra1hg

Internal Product ID

24588

Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Grado RA-1 HG (High Gain Version)