HIFIMAN EF2A + Grado SR80E

General Features:

• Compact desktop headphone amplifier/DAC
• Provides significantly more dynamics and detail to your headphones
• Utilizes two 6J1 vacuum tubes for the amplifier input stage
• Injects smoothness and clarity into your music to really bring it to life
• Burr Brown PCM2702 digital-to-analog converter provides exceptional sound quality
• Rear USB input allows you to connect to your computer and bypass the built-in DAC and audio circuitry
• Rear stereo RCA audio input allows you to enjoy your music from other audio sources
• Full size front stereo headphone output
• Rotary volume control
• Sleek, durable metal chassis
• Acrylic top panel
• External power supply included
• Dimensions: 5-11/16"W x 4-1/4"D x 3-1/8"H
• Authorized Internet Dealer
• 1-year Manufacturer's Warranty

Specifications:

• Input Impedance: 47,000 ohm
• Output Impedance: 32-300 ohm
• Output:
• @ 32 Ohm: 3 v, 320 mw
• @ 150 Ohm: 6.2 v, 256
• Frequency Response: 20-20,000 Hz
• Signal-to-Noise Ratio: 95dB
• Distortion: 0.2%

What's in the Box?

• HIFIMAN EF-2A Headphone Amplifier/DAC
• Two 6J1 Vacuum Tubes
• AC Power Adapter
• 5' USB Cable
• User Guide

Note: HiFiMAN products can only be shipped to customers in the United States

General Features:

• Wired Prestige Series On-Ear Headphones
• Dynamic driver transducer with open air operation
• Vented diaphragm and non-resonant air chamber for greater sound detail
• Incredible sound quality when paired with a headphone amplifier
• Great for all styles of music, especially rock and roll
• Specially designed vented diaphragms provide a natural sound and extended bass response
• Drivers precisely matched to within 0.1dB for improved stereo imaging
• Copper voice coil wire for dynamic performance
• 4-conductor copper headphone cable for improved sound quality
• Adjustable headband for comfortable listening sessions
• Primary Color: Silver
• Accent Colors: Black
• Authorized Internet Dealer
• 1-year Manufacturer's Warranty

Product Specifications:

• Frequency Response: 20-20,000 Hz
• Sensitivity: 99.8dB
• Nominal Impedance: 32 Ohm
• Cable:
• Detachable: No
• Cable Length: 81"
• Plug Size: 3.5mm
• 1/4" adapter plug included

What's in the Box?

• Grado SR80e On-Ear Headphones
• 1/4" Adapter Plug
• Grado Story Sheet
• User Guide