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  3. Discontinued Grado Portable & Personal Electronics
  4. Discontinued Grado Headphones
  5. Discontinued Grado Headphone DACs

Discontinued Grado Headphone DACs

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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.
Input Connection
This is the manner in which the headphone amplifiers receive an input audio signal.
Output Connection
This is the manner in which the headphone amplifier will output the audio signal.
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.
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.

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Grado RA-1 (A/C Version)

A/C Powered Headphone Amplifier with Solid Mahogany Housing

RA1AC big DISCONTINUED
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Grado RA-1 (A/C Version)

A/C Powered Headphone Amplifier with Solid Mahogany Housing

• A/C Powered Headphone Amplifier
• 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
• Inputs: RCA

1

• A/C Powered Headphone Amplifier
• 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
• Inputs: RCA

Grado RA-1 HG (High Gain Version)

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

RA1HG big DISCONTINUED
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Grado RA-1 HG (High Gain Version)

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

• High Gain A/C Powered Headphone Amplifier
• 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
• Inputs: RCA

• High Gain A/C Powered Headphone Amplifier
• 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
• Inputs: RCA

Grado RA-1 BATTERY

Battery Powered Headphone Amplifier with Solid Mahogany Housing

RA1BATTERY big DISCONTINUED
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Grado RA-1 BATTERY

Battery Powered Headphone Amplifier with Solid Mahogany Housing

• Battery Powered Headphone Amplifier
• Operates for 40-50 Hours
• Works with Pair of 9V Batteries
• Machined from a Solid Block of Mahogany
• High-Current Output Capability
• Inputs: RCA

• Battery Powered Headphone Amplifier
• Operates for 40-50 Hours
• Works with Pair of 9V Batteries
• Machined from a Solid Block of Mahogany
• High-Current Output Capability
• Inputs: RCA

 
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