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Sennheiser HD 800 S Dynamic Open-Back Stereo Headphones
EAN: 615104273009
An update on the well-regarded HD 800, the HD 800 S by Sennheiser comprises a pair of open-back headphones designed for use in studio situations, particularly when referencing between monitors and cans. Its 56mm transducer is housed in stainless steel, while its headband and mounting utilize industrial, aerospace-grade materials to emphasize durability at a relatively light weight of 11.6 oz. Sennheiser s proprietary sound absorber technology preserves the integrity of the highest of high ends by eliminating the masking effect, a phenomenon in which the ear struggles to hear particularly bright signals when lower-frequency material occurs simultaneously at a louder volume. In reducing this masking effect, every nuance of the frequency spectrum is represented and made audible.
The design of its earcups directs sound to the ear at a subtle angle, thereby aiding in a realistic-and realistically stereo-monitoring experience. Additionally, there are two different possibilities for audio connection: a stereo 1/4 connector, and a 4.4mm balanced cable for connecting to balanced outputs, such as a headphone amplifier.
Key Features
Grace Design m900 Compact, Portable Headphone Amp, DAC, and Preamp
EAN: 823821009003
The Grace Design m900 is a compact, portable headphone amplifier, DAC, and preamp, well suited for audio professionals, music enthusiasts, or anyone looking for transparent playback from USB, S/PDIF, or TOSLINK sources. For small DAW setups, the m900 provides the same analog and DAC quality as Grace Design s large monitor controllers, but in a rugged, portable, and surprisingly affordable unit.
The heart of the Grace Design m900 features the latest generation AKM 4490 chip, which includes 32-bit processing and support for sample rates up to 384 kHz or DSD256. The USB interface operates in asynchronous mode allowing the m900 to be the clock master, which makes the system immune to USB bus jitter. S/PDIF and TOSLINK inputs enhance any DAW interface with true reference-quality D/A conversion, headphone monitoring, and stereo speaker control.
The intelligent power supply design allows for two power operation modes, Low and High. Low power mode is derived from USB connection 1, which provides bus power along with data, allowing simple operation from a single connection to a computer. High power mode is available by connecting the included 2A USB DC power supply to USB connector 2, which provides additional power for high-impedance headphones.
The Grace Design m900 utilizes trans-impedance amplifier topology coupled to a zero-ohm output impedance driver for headphone performance that is spacious and transparent with a tight, enveloping low end, while the latest generation cross-feed circuit rounds out the design by emulating an acoustic listening environment in the headphones. The Grace Design m900 ships with a 2A USB power supply and two USB Type-B mini-cables (6 and 10 .)
EAN: 615104273009
An update on the well-regarded HD 800, the HD 800 S by Sennheiser comprises a pair of open-back headphones designed for use in studio situations, particularly when referencing between monitors and cans. Its 56mm transducer is housed in stainless steel, while its headband and mounting utilize industrial, aerospace-grade materials to emphasize durability at a relatively light weight of 11.6 oz. Sennheiser s proprietary sound absorber technology preserves the integrity of the highest of high ends by eliminating the masking effect, a phenomenon in which the ear struggles to hear particularly bright signals when lower-frequency material occurs simultaneously at a louder volume. In reducing this masking effect, every nuance of the frequency spectrum is represented and made audible.
The design of its earcups directs sound to the ear at a subtle angle, thereby aiding in a realistic-and realistically stereo-monitoring experience. Additionally, there are two different possibilities for audio connection: a stereo 1/4 connector, and a 4.4mm balanced cable for connecting to balanced outputs, such as a headphone amplifier.
Key Features
- Open-back, circumaural dynamic sound reproduction achieved through absorber technology
- 4 Hz to 51 kHz frequency response
- 300 Ohm impedance
- Matte-black metal parts
- Realistic and natural sound field with minimal resonance
- Large transducers with finely crafted dynamic transducer design
- Uncovered earcups for enhanced acoustics
- Handcrafted ear pads made of microfiber fabric
- Metal headband with an inner damping element
- Tuned and balanced impedance-matching cable with low capacitance
- High-precision headphone connectors
Grace Design m900 Compact, Portable Headphone Amp, DAC, and Preamp
EAN: 823821009003
The Grace Design m900 is a compact, portable headphone amplifier, DAC, and preamp, well suited for audio professionals, music enthusiasts, or anyone looking for transparent playback from USB, S/PDIF, or TOSLINK sources. For small DAW setups, the m900 provides the same analog and DAC quality as Grace Design s large monitor controllers, but in a rugged, portable, and surprisingly affordable unit.
The heart of the Grace Design m900 features the latest generation AKM 4490 chip, which includes 32-bit processing and support for sample rates up to 384 kHz or DSD256. The USB interface operates in asynchronous mode allowing the m900 to be the clock master, which makes the system immune to USB bus jitter. S/PDIF and TOSLINK inputs enhance any DAW interface with true reference-quality D/A conversion, headphone monitoring, and stereo speaker control.
The intelligent power supply design allows for two power operation modes, Low and High. Low power mode is derived from USB connection 1, which provides bus power along with data, allowing simple operation from a single connection to a computer. High power mode is available by connecting the included 2A USB DC power supply to USB connector 2, which provides additional power for high-impedance headphones.
The Grace Design m900 utilizes trans-impedance amplifier topology coupled to a zero-ohm output impedance driver for headphone performance that is spacious and transparent with a tight, enveloping low end, while the latest generation cross-feed circuit rounds out the design by emulating an acoustic listening environment in the headphones. The Grace Design m900 ships with a 2A USB power supply and two USB Type-B mini-cables (6 and 10 .)
- USB, S/PDIF and TOSLINK digital inputs, supports up to 192 kHz (TOSLINK up to 96 kHz)
- Asynchronous USB interface for jitter free computer audio playback, supports up to 384 kHz PCM and DSD256
- Dual zero-ohm output impedance headphone outputs
- Unbalanced level controlled outputs via RCA for connecting to a stereo monitor system
- Compact, portable chassis perfect for travel, desktop or studio
- Low power mode via USB Bus power
- High power mode via included USB 2A power supply
- Four different DAC filter settings to tailor playback performance to personal preference
- Simple user setup menu for setup and calibration
- Display: 7-segment LED displays level and setup menu information
- Large rotary encoder for volume control and setup menu navigation
- Made in the USA
- 5-year transferable warranty
Sennheiser HD 800 S Dynamic Open-Back Stereo Headphones Specs
Headphone
| Driver Size | 2.2" / 56 mm |
| Total Harmonic Distortion (THD) | 0.02% |
| Foldable | No |
| Contact Pressure | 3.4 N |
| Audio Connector to Source | 1/4" TRS 4.4 mm |
| Cable Design | Y-Type |
Packaging Info
| Package Weight | 4.96 lb |
| Box Dimensions (LxWxH) | 14.05 x 10.9 x 6.2" |
Grace Design m900 Compact, Portable Headphone Amp, DAC, and Preamp Specs
| Connectors | Inputs Digital Inputs: S/PDIF and TOSLINK USB Power: Micro-USB 5 V, 2 A (high power input) USB Data: Micro-USB 2.0 (for data, signal, bus power input) Output Stereo Line Outputs: RCA (L/R) Headphone: 2 x 1/4" / 6.35 mm |
| Display | 7-segment LED |
| THD + N | THD+N 1 kHz, 22 Hz - 22 kHz BW @1.0 V Out, No Load: <0.002% @1.0 V Out, 32 Ohms Load: <0.010% |
| Intermodulation Distortion | Intermodulation Distortion SMTPE/DIN 4:1 50 Hz, 7 kHz @1.0 V Out, No Load: <0.008% @1.0 V Out, 32 Ohms load: <0.009% |
| Frequency Response ± 3dB | Fs=96 kHz: 0.5 Hz to 45.9 kHz |
| Dynamic Range | 20 Hz to 22 kHz Bandwidth: 112 dB 20 Hz to 22 kHz Bandwidth and A-Weighting Filter: 115 dB |
| Output Noise | 20 Hz to 22 kHz, Volume = 0-90: -106 dBV A-Weighting Filter, Volume = 0-90: -109 dBV 20 Hz to 22 kHz, Volume = 90.5-99.5: -96 dBV A-Weighting Filter, Volume = 90.5-99.5: -98 dBV |
| Crosstalk | 100 Hz: <107 dB 1 kHz: <98 dB 20 kHz: <72 dB |
| Attenuation | Attenuation Range: 0 to -99 dB, 0.5 dB steps |
| Accuracy | Channel Tracking Accuracy: ±0.05 dB |
| Maximum Output Level | Maximum Output Level, No load Low Power Mode: +14.1 dBV (5.1 V) High Power Mode: +15.5 dBV (6.0 V) |
| Impedance | Headphone Output: 0.08 Ohms Line Output: 47.5 Ohms |
| Lock Range | S/PDIF 44.1 kHz: 43870-45420 Hz 48 kHz: 46590-49220 Hz 88.2 kHz: 87760-90830 Hz 96 kHz: 93520-98430 Hz 176.4 kHz: 175700-181640 Hz 192 kHz: 187050-196380 Hz TOSLINK 44.1 kHz: 43900-45410 Hz 48 kHz: 46590-49190 Hz 88.2 kHz: 87840-90830 Hz 96 kHz: 93520-97530 Hz USB Supported Sample Rates: 44.1, 48, 88.2, 96, 176.4, 192, 352.8, 384 kHz |
| Power Consumption | Max, High Power Mode: 8.0 W Max, Low Power Mode: 2.5 W |
| Power Mode | Headphone Output Power Low Power Mode 1 Channel Driven 1 Channel Driven |
| Dimensions | 4.0 x 5.3 x 1.8" / 101.6 x 133.4 x 45.7 mm |
| Weight | Not specified by manufacturer |
Packaging Info
| Package Weight | 2.325 lb |
| Box Dimensions (LxWxH) | 10.35 x 10.3 x 4.5" |
In the Box
- Cable with 1/4" / 6.3mm Connector
- Cable with Balanced 4.4mm Connector
- Microfiber Cleaning Cloth
- USB Flash Drive
- 2-Year Manufacturer Warranty
- USB Wall Power Supply
- 2 x USB Type-B Mini Cable: 6` and 10`
- 5-Year Manufacturer Warranty
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