Key Specs
- Continuous Watts x Channel @ Ohms: 330 mW x 2 @ 30 Ohm
- Number of Channels: 2 (The number of discrete channels of sound output. This can be a single number or multiple numbers separated by decimal(s). The first number is the primary, horizontally directed audio channels. The number after the first decimal, if applicable, is the number of subwoofer outputs or channels. The number after the second decimal, if applicable, is the number of height or atmospheric channels designed to immerse the listener by producing overhead sound effects.)
General
- Product Name: Head Box 660W 2.0-Ch. Headphone Amplifier
- Brand: Pro-Ject
- Model Number: BOX - HEAD-BOX S SILVER
- Color: Silver
Audio
- Continuous Watts x Channel @ Ohms: 330 mW x 2 @ 30 Ohm
- Maximum Watts x Channel @ Ohms: 60 mW x 2 @ 300 Ohm (This is the maximum load the speaker, subwoofer or amp can drive.)
- Total Power Handling: 660 watts (How much amplifier (amplified) power (wattage) that can be handled before damaging the product.)
- Number of Channels: 2 (The number of discrete channels of sound output. This can be a single number or multiple numbers separated by decimal(s). The first number is the primary, horizontally directed audio channels. The number after the first decimal, if applicable, is the number of subwoofer outputs or channels. The number after the second decimal, if applicable, is the number of height or atmospheric channels designed to immerse the listener by producing overhead sound effects.)
- Minimum Frequency Response: 10 hertz (Describes the maximum range of frequencies or musical tones a product can reproduce, from very low tones to very high treble tones. The minimum frequency or musical tone the speaker can reproduce. High treble tones have higher frequencies while low tones and deep bass have lower frequencies.)
- Maximum Frequency Response: 120 kilohertz (Describes the maximum range of frequencies or musical tones a product can reproduce, from very low tones to very high treble tones. The maximum frequency or musical tone the speaker can reproduce. High treble tones have higher frequencies while low tones and deep bass have lower frequencies.)
- Signal-to-Noise Ratio (SNR): 95 decibels (The ratio of the desired signal's strength to the level of background noise. A ratio higher than 1:1, which equates to greater than 0 decibels, indicates more signal than noise.)
Audio
- Impedance: 30 ohms (Describes the resistance of an electric signal throughout the system. Devices with low impedance require less power to deliver optimal signals but are more at risk for damage from overloading. Higher impedance requires more power but is more protected from overload damage.)
Inputs
- Line-Level Inputs: true (Also referred to as low-level inputs. Enables the amplifier to receive a sound signal from another device via RCA cables.)
Dimensions
- Product Height: 1.4 inches (The out of box height of the item. Height is measured as the vertical distance from the bottom of the item to the top as it would be primarily used or placed.)
- Product Width: 4.1 inches (The out of box width of the item. Width is measured as the horizontal distance from one side of the item to the other as it would be primarily used or placed.)
- Product Depth: 4.3 inches (The out of box depth of the item. Depth is measured as the distance from the front of the item to the back as it would be primarily used or placed.)
- Product Weight: 1.3 pounds (The out of box weight of the item.)
Other
- UPC: 844682003467

Head Box S satisfies with rich colorful presentation, very close to reality. It is a perfect upgrade compared to all headphone connections that can be found on conventional amplifiers. Input connections for Head Box S can be done from record-output of your amplifier. Because of an integrated loop-out on Head Box S, you do not loose connectivity to your recording device.

High quality amplifier modules are used to guarantee best possible headphone amplification and makes hearing your favorite music a delight! Head Box S delivers natural dynamics, transparency and pure audiophile enjoyment!

660W total power: RMS rating of 330W x 2 @ 30 ohms, 2 channels driven for robust audio.
Headphone amplifier: Delivers clear audio for an immersive listening experience.
300 ohms impedance: Efficiently conducts power.
95 dB signal-to-noise ratio: Offers crisp audio.