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CHIPSET & CODEC VT1723 & VT1617AAnalog-Out : 5.1 Channel(3.5mm Stereo)
Analog Input MIC-In & Line-In combined(external)
Digital Output Optical(24bit /96kHz), S/PDIF OUT(internal, 2pin)
Card Type Standard PCI, Low ProfileSupporting
Frequency 44.1kHz, 48kHz, 96kHz(digital)
OS Support Windows XP, Vista and Windows 7

Analog-Out 5.1 channel & Headphone Jack (G9 to 3Phone Jack)
Analog Input MIC-In & Line-In combined(external)
Digital Output Optical-Out & Coaxial-Out (24bit /96kHz)
ADC/DAC 20bit / 96kHz
In/Out Dynamic Range 93dB or higher of actual measurement (output)
MIC Free Amplifier +6dB gain & filtering circuit(150Hz~6kHz)
Analog 5.1CH Free Amplifier +3dB gain
Headphone Amplifier +3dB gain / 120mW output(Max) / dual OPAMP type
FP_AUDIO port embedded 10pin(2x5), case front connection (MIC & Headphone jack)
Supporting Frequency 44.1kHz, 48kHz, 96kHz(digital)
Card Type Standard PCI, Low Profile
OS Support Windows XP, Vista and Windows 7

Specifications

Line-Out 1) Socket Type Exchangeable FDO Triple OPAMP
2) Type : RCA Jack
3) Output Level and Attenuation : 10dBV(Maximum), 0.5dB Step Size
4) Impedance : 200Ohm
Headphone Output 1) JRC4580 Dual OPAMP
2) Type : 3.5mm Mini Phone Jack
3) Maximum Output : 120mW
4) Output Gain 0 ~ 20dBV(maximum)
5) Gain Setting Jumper(JP1) : ON(up to 20dBV), OFF(up to 10dBV, default)
Analog Input 1) Type : Line-In (3.5mm Mini Phone Jack) / AUX-IN(4P, Internal)
2) Input Level : 0 ~ 6dBV Max
3) Impedance : 10K Ohm
4) Volume Control and Recoding : Not Supported
Digital Output 1) 24Bit/192KHz
2) Type : Optical-Out Terminal
3) Format : IEC-958Consumer(S/PDIF)
Sampling Rate 44.1, 48, 96, 192KHz
D/A Converter (AK4396) 1) Dynamic Range (S/N): 120dB A-Weighted (Typical)
2) Frequency Characteristic : 5Hz ~ 40KHz
3) Sampling Rate : 30KHz ~ 216KHz
4) Bit Resolution : 24Bit
A/D Converter (AK5357) 1) Dynamic Range (S/N): 102 dB A-Weighted (Typical)
2) Frequency Characteristic : 20Hz ~ 40KHz
3) Sampling Rate : 4KHz ~ 96KHz
4) Bit Resolution : 24Bit
Chipset Envy24HT-S(VT1721)
OS Support Windows XP, Vista and Windows 7

Specifications

Analog Output 8 channel Line Output (7/8 Channel ? both BS channel output & headphone output)
Analog Input MIC Input / LINE Input
Digital Output Square shape Optical / Coaxial / Internal SPDIF 2pin terminal
Sample Rate 44.1, 48, 96, 192kHz
Card Type Support Standard PCI, Low Profile
OS Windows XP 32/64-bit, Vista 32/64-bit, 7 32/64-bit

Interface PCI�E (PCI Express)
Analog Input Maximum 24bit/96kHz
Combined Microphone and Line Input (3.5mm Stereo mini jack)
Analog Output Maximum 24bit/96kHz
7.1-channel Output(3.5mm Stereo mini jack x 4 )
Headphone Output(3.5mm Stereo mini jack) : 16~300ohm
Digital Input Maximum 24bit/96kHz
Optical-Input (OPTICAL) Terminal
Digital Output Maximum 24bit/96kHz
Optical-Out (OPTICAL) Terminal, Internal S/PDIF Output
Supported AC3 PassThrough
F_P Audio Terminal Intel HD Front Panel Audio standard
D/A Converter (AK4396) AKM4358 / 112dB ( 7.1-channel Output)
AKM4388 / 106dB ( F_P Audio )
A/D Converter (AK5357) AKM5358 / 102dB
Device Drivers DirectSound , MME , WDM, OpenAL
Supported API DirectSound / DirectSound 3D, EAX 1.0 / 2.0, EAX ADVANCED HD 3.0 / 4.0, OpenAL
Supported Frequency Windows XP : 48, 96kHz Windows VISTA : 44.1, 48, 96kHz
Supported Operating System Support Windows XP, Vista and Windows 7
OPAMP OPA2134 Socket Type ( Front Output / Headphone output applied simultaneously)

Headphone Output Type
Maximum Out Level
Maximum Load Power
THD+N
Impedance 1/4� Stereo phone jack
Port 1 : +8dBV (6Vpp) / Port 2 : +20dBV (24Vpp)
300mW
0.0008% A-weighted (@ 100mW, 1kHz)
0O (Load : 16 ~ 600)
Line Input / Output Type
Level
Impedance Unbalanced RCA
-10dBV Nominal (@-16dBFS) / +8dBV max
15kO(Input) / 200O(Output)
USB Audio Type Max 24bit / 96kHz, USB 1.1 / 2.0 Compatible
OS Support

Support Windows 7, Windows Vista, Windows XP, Mac OS-X
Note: The Pass-through Digital output is available to Windows Vista(SP1) and Mac OS-X only.
Digital Audio Input Type

Format
Sample rate Detection S/PDIF Optical on TOS-LINK 44.1~192kHz
S/PDIF Coaxial on RCA 44.1~192kHz
IEC-60958, S/PDIF Compatible
44.1, 48.0, 88.2, 96.0, 176.4, 192.0 kHz (@ �3%)
Digital Audio Output Type
Format
Sample rate Detection S/PDIF Optical on TOS-LINK 44.1~96kHz
IEC-60958, S/PDIF Compatible
44.1, 48.0, 96.0 kHz
D/A Converter Type
Dynamic Range
THD+N
Frequency Response


Gain Mismatch 24bit, 192kHz, 8times Digital filter
123dB (@ -60dBFS with A-Weighted)
0.0005% (@ fs=44.1kHz, 0dB)
0 ~ 21.7kHz, �0.0002dB (@ fs=48kHz)
0 ~ 43.5kHz, �0.0002dB (@ fs=96kHz)
0 ~ 87.0kHz, �0.0002dB (@ fs=192kHz)
�0.5%(channel to channel)
OPAMP Operating Voltage 24.0V(�12V),
FDO : NE5532 x 3 (DIP, Socket Type)
Line Out : OPA2134 (DIP, Socket Type)
Headphone : OPA2604 (DIP, Socket Type)
Line In : NJM4580 (SMD)

Analog-Out Line output (RCA), Dual headphone output (Stereo phone, Stereo mini)
Analog Input Microphone Input (3.5mm, 24bit / 48kHz)
Digital Output Optical / Coaxial
Digital Output Method PCM, AC3 PassThrough
Dynamic Range 108dB
Interface USB Interface (1.1 / 2.0 compatible)
OPAMP Circuit OPA 2134 x 1 (Socket-type) THD+N : 0.00008%(Max)(2kO@1KHz)
D/A Converter Wolfson WM8776
Headphone Impedance 16~150O
Frequency Response 24bit / 96kHz
Power Supply OPAMP 5V(Dual power supply Max10V)
Power Supply USB bus power
OS Support Windows 7, Windows Vista, Windows XP, Mac OS-X
Note: The Pass-through Digital output is available to Windows Vista(SP1) and Mac OS-X only.
Dimension (mm) 94 X 90 X 22 (W x D x H)

Input Terminal Line Input (RCA, 3.5 mm Stereo Mini)
Input Impedance 11k O
Output Headphone Output (6.3mm Stereophone, 3.5 Stereo Mini)
Headphone Impedance 16~600O
Rated Output Stereophone 250+250mW@32O
Stereo Mini 100+100mW@16O
Quad OPAMP Circuit OPA 2134 x 1 (Socket Type) THD+N : 0.00008%(Max)(2kO@1KHz)
NJM 4580 x 3 (SMD Type) THD+N : 0.0005%(Max)(2kO@1KHz)
Driving Voltage 12V~15V
Power Supply AC adapter (12V~15V), battery pack(7.2V)
Weight 1) about 125g without the battery
2) about 200g with the battery
Charging Time about 3 ~ 4 hrs
Battery Life about 8 hrs
Dimensions(mm) 90 X 90 X 20 (W x D x H)

Main Features:
- Opamp: OPA275
- Tube: RCA Clear top 12AU7
- Frequency Response: 20-30K Hz
- THD+N: less than 0.2%
- S/N: more than 95dB
- Input impedance: 50K Ohm
- Output impedance: 2�2K Ohm headphones
- Output signal strength: up to 15 Volts at 32 Ohm
- Input: RCA*1
- Output: 1/4 headphone jack*1
- Dimension: 110mm(W)*50mm(H)*270mm(D),
- or 4.33inch(W)*1.97inch (H)*10.63inch (D)
- Weight:6lb (include packing)
- Acessory: 12AU7 tube, DY-1 power supply, compatible from 110v to 240v
- Hand built

Main features:
- 3ch Architecture Design
- Two Gain switches
- ALPS Potentiometer
- Anodized Stainless Steel Case
- Rechargeable Li-Polymer Battery with integrated charging system
- Charging is accomplished with either the USB cable or AC adapter
- Up to 38 hours of play time
- Measures 64.5L x 37W x 10H (mm), and weighs only 28g

Main features:
- 25.2V voltage swing, the highest voltage swing among portable Amplifiers
- Up to 1400mW output power
- Takes Balanced and Single End inputs, and provides Balanced and Single End outputs
- 2-Setting gain switch for impedance matching
- Rechargeable battery pack
- New case surface finish, we call it pulverization finish
- More than 20 hours play time
- Measures 55*24*81mm, and weighs 140g
- ALPS quad potentiometer, Hirose connector, Switchcraft jack, gold-plated PCB, Vishay high grade capacitors and resistors inside
- Comes with charger, leather pouch, 3.5 to 3.5 interconnect, rubber feet, and warranty card

Main Features:
- PCM2906B, converts USB into a S/PDIF signal
- CS8416, DA-receiver chip
- WM8740, D/A chip
- Flexible input compatibility. It has USB, optical, and coaxial inputs.
- Built-in rechargeable Li-polymer battery, plays up to 24 hours
- Measures 55*24*81mm, and weighs 120g
- Comes with power adapter, leather pouch, USB cable, rubber feet, and warranty card

Main features:
- ThreeChannel/ Four Channel compatible architecture
- Totally 8 gold-plated DIP sockets for OPAMPs and Buffers rolling
- 2-Setting Gain Jumper for impedance matching
- Powered by 12.6V Li-polymer battery pack, or external 16V power adapter
- 40 hours play timw with stock opamps (TLE2141 Class A*2, BUF634U*2, dummy adapter*2)
- High output power, 600mW+600mW into 32Ω
- High quality components, such as, gold plated PCB, ALPS volume pot, Nichicon cap, Vishay resistors, Switchcraft jacks.
- Measures 55*24*92mm, and weighs 156g
- Comes with power adapter, leather pouch, rubber feet, connection cable, warranty card, and opamp rolling kit. (includes AD797*2, OPA604*2, TLE2141 Class A*2, BUF634P WB*2, BUF634U*2, Transistor BUF*2, Dummy adapter*4)

Main features:
- PCM2906B, converts USB into a S/PDIF signal
- CS8416, DA-receiver chip
- Dual WM8740s, D/A chip
- OP+BUF structure for amplification.
- 2-Setting Gain Switch for impedance matching (+3/10dB)
- Dedicated MCU (Micro Controller Unit) to manager inputs, outputs, and functions.
- Flexible input and output compatibility. It has USB, optical, coaxial, stereo inputs, line out, and stereo output
- Works as a combo or a stand-alone AMP, DAC, USB soundcard
- Built-in rechargeable Li-polymer battery plays up to 30 hours (30 hrs for AMP, or 18hrs for combo)
- Measures 55*24*103mm, and weights 160g
- Comes with power adapter, leather pouch, optical cable, USB cable, 3.5 to 3.5 interconnect, rubber feet, OPAMP rolling kit, and warranty card.

What�s included:
- Maverick Audio Tube Magic DAC
- User�s quick start guide
- Line-in cord for most iPod and other MP3 players with standard 3.5 mm jack
- USB cable
- 1/8″ (3.5mm) to 1/4″ (6.5mm) gold plated headphone jack converter
- AC Power Cord

Audio inputs:
- Optical audio input x 1 (Digital)
- Coaxial audio input x 1 (Digital)
- USB connector x 1 (Digital)
- Analog audio input x 1 (Analog)
- Line-in audio input x 1 (Analog)
- Optical connector: TOSLINK 660nm
- Coax connector: RCA, 500mVpp into 75 ohms
- Analog connector: RCA, 1000k ohms
- Accepted sample rates: 32khz, 44.1Khz, 48Khz, 88.2Khz, 96Khz
- Accepted audio format: linear PCM, 16, 20 or 24 bits per sample

Audio outputs:
- All RCA connectors are gold-plated
- Volume control is provided for all outputs
- Two dedicated linear power regulators for DAC and line-out stages
- Dedicated linear power regulators for Tube stage
- Analog RCA outputs signal-to-noise ratio: >96dB
- Tube pre-out outputs signal-to-noise ration: >90dB
- Analog RCA and Tube pre-out outputs impedance: 5K ohms
- Total harmonic distortion: less than 0.001% (RCA outputs), less than 0.1% (Tube pre-out outputs)
- Maximum output power: 1000mW x 2 (32 ohms), 500mW x 2 (300 ohms), 300mW x 2 (600 ohms)

Headphone outputs:
- Standard 1/4″ jack
- Minimum headphone impedance: 16 ohms
- Maximum headphone impedance: 600 ohms
- Headphone output power: 300mW ~ 1000mW

Power:
- R-core Linear 110/220 manual switch

Physical:
- Dimensions: 10″W x 2.1″H x 6.5″D (260mm x 55mm x 167mm)
- Finish: brushed aluminum in black color

What�s included:
- Maverick Audio TubeMagic Hybrid Integrated Amplifier
- User�s quick start guide
- Line-in cord for most iPod and other MP3 players with standard 3.5 mm jack
- 1/8″ (3.5mm) to 1/4″ (6.5mm) gold plated headphone jack converter
- AC Power Cord

Audio inputs
- Analog audio input x 1 (Analog)
- Line-in audio input x 1 (Analog)
- Analog connector: RCA, 1000k ohms

Audio outputs:
- All RCA connectors are gold-plated
- Volume control is provided for all outputs
- Power outputs: 20 watts per channel (into 8 ohms), 40 watts per channel (into 4 ohms)
- Frequency Response: 20Hz � 25KHz
- Input Impedance: 100K ohms
- Analog RCA outputs signal-to-noise ratio: >90dB
- Tube pre-out outputs signal-to-noise ration: >90dB
- Total harmonic distortion: less than 0.1% (Tube pre-out outputs and analog outputs)
- Headphone maximum output power: 1000mW x 2 (32 ohms), 500mW x 2 (300 ohms), 300mW x 2 (600 ohms)

Headphone outputs:
- Standard 1/4″ jack
- Minimum headphone impedance: 16 ohms
- Maximum headphone impedance: 600 ohms
- Headphone output power: 300mW ~ 1000mW

Power:
- R-core Linear 110/220 manual switch

Physical:
- Dimensions: 10″W x 2.1″H x 6.5″D (260mm x 55mm x 167mm)
- Finish: brushed aluminum in black color