o1 Overseas version of pure headphone amplifier with DAC decoding
o1 Pricing for overseas version of pure headphone amplifier: RMB 3,000
o1 The overseas version with SNS decoding amp is priced at 6000 yuan
We all send SF Express
Amp part :
Suitable for earphone impedance: 32-600ohm
Maximum output power 1200mw X 2
1200mw x 2 32 Euros, 64 Euros
600mw x 2 120 euros
300mw x 2 250 euros
150mw x 2 600 euros
Bandwidth: 6Hz-120kHz (+0/-3dB)
Harmonic distortion: 0.002%
Signal to noise ratio: 100dB (A port）, 110dB（B port, 32 ohm load）
The output voltage: 10Vrms
Input impedance: 10kohm
DAC part specifications:
Power consumption: 2W
Input format: 32khz / 44.1khz / 48khz / 96khz/192khz
16bit / 20bit / 24bit
Optical fiber / Coaxial
spdif format
Optical fiber / coaxial / analog signal automatic switching
8 times digital oversampling:
In-channel equalization:±0.0002dB
Distortion: -104dB
Dynamic range: 116dB
Signal to noise ratio: 117dB
dac＋O1 headphone amplifier total distortion: 0.003%
Dimensions (width X height X depth, maximum size): 288mmX76mmX260mm
Net weight: 2.6kg（Pure amp version）
2.7kg（Decoded version）
Packed weight: 3.6kg
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Product warranty:
In order to ensure the interests of buyers, this product has the most complete after-sales service, including three-day unconditional return of service terms
1）This product wins with sound quality and cost-effectiveness, so it is necessary to give the buyer a chance to listen and compare with other products. Therefore, if the product is dissatisfied with the product within 3 days after the buyer arrives and needs to be returned, as long as the product is in the original packaging（Including all accessories）Send it back to me for a full refund（Buyers and sellers bear half of the round-trip postage）. The seller usually asks the buyer about the reason for the return to improve the product and service, but if the buyer is unwilling to explain the reason, there is no need to explain the reason for the return to the seller, and it will not affect the return at all.（If the product is found to be damaged by the buyer after the product is returned, the buyer shall bear the reasonable repair cost
2）When the buyer finds that the product is faulty or damaged due to transportation or the product itself when receiving the product, the seller is responsible for the replacement and bears the resulting round-trip mailing（Express delivery）cost
3）If the buyer fails due to the quality of the machine within three months after completing the purchase process, the seller is responsible for free repairs and bears the resulting round-trip mailing（Express delivery）cost
4）This product has a free warranty for one year after the buyer receives it, and a lifetime cost maintenance after one year.
All failures caused by non-human factors, quality problems, and problems with the machine itself are guaranteed for free round-trip shipping within three months;
All failures caused by non-human factors, quality problems, and problems with the machine itself are guaranteed within one year, and the return freight is paid by yourself.
The above clauses protect the interests of buyers to the utmost extent. The warranty and return clauses do what they say, and the 100% reputation of our shop is guaranteed! If there is any violation of the above return warranty clauses in our shop, please give the buyer a bad review!
Universal Tuning:
ad823+LME49860
opa627
opa637 (new DT880/701)
opa2228(KK)
For tuning（Only list the first freight of one kind of op amp, the default is JRC4556）
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Sennheiser:
HD650 (latest tuning） JRC4556+PH NE5532/opa2604/PMI OP275/M5218
HD600/580 (latest tuning）JRC4556+M5218/TI NE5532
HD600+ card line (latest tuning) JRC4556+M5218
HD560II card replacement cable (latest tuning, recommended by dark132) JRC4556+M5218
HD540G (latest tuning) AD823+PH NE5532
HD540II (latest tuning, recommended by dark132) JRC4556+M5218
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Beyerdynamic:
Old version DT880/831 (latest tuning） JRC4556+JRC4558
New version DT880 (250 Euro) (latest tuning） JRC4556+M5218
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New version DT880(32) (Port B) JRC4580+M5218
New version DT880(600) (Port A) JRC4556+PMI OP275/M5218
DT990 (250 Euro latest tuning） JRC4580+M5218
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DT990(32) (Port B) JRC4556+OPA2228
DT990(600) (Port A) JRC4580+TL082
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DT770 JRC4556+PH NE5532
DT860 JRC4570+OPA2604
DT660 JRC4580+OPA2604
DT331 OP213
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Philips:
PHILIPS HP8900 OP213
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AKG:
K601 opa2604
K701 (latest tuning） JRC4556+M5218
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K702 PH NE5532+OPA2228 (Port B）
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K1000 (latest tuning） LME49860+OP213
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K240df old version (latest tuning）JRC4556+TL082/op275
K240df new version (latest tuning）JRC4556＋TI NE5532
K271MKII (latest tuning） JRC4558+OPA2228
K240MKII (latest tuning） JRC4580+OPA2228
K530 (latest tuning） JRC4556+OPA2134
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Alice:
M2 JRC4556+PHILIPS NE5532 (B port）
Mpro (latest tuning) JRC4580+op213 (Port A) JRC4580+OPA2604 (Port B)
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German extreme:
ED9 OPA2604
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Etymotic:
ER4b TL082
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Audio-Technica:
ATH-A900ti Big S NE5532 stickers
ATH-A1000 OPA2604(?NE5532)
ATH-AD2000 (latest tuning） JRC4556+LT1057
ATH-W1000 OPA2604/LT1028*
ATH-W5000 OP213+JRC4556
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Goethe, Germany:
QP450 (latest tuning） AD823+AD823
QP435 (latest tuning） PMI op275+AD712
QP400 (latest tuning） JRC4556+AD823/M5218
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China Yuyin:
PK1 (latest tuning） JRC4556+JRC4580
OK1 (latest tuning） JRC4556+op213 (monitor style)/PH NE5532 (comfort style)
G1 (latest tuning） AD826+OPA2228
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Front panel: Input signal indicator
CD, AUX1: 2 groups of analog input
AUX2/DAC: Decoder digital input
The 3 function switches on the front panel, from top to bottom, are:
Input mode selection button: select analog input or digital input
Volume knob: Adjust the amp and preamp volume
switch: Press to turn on, bright blue
Rear panel: on the left are various input and output terminals
The right side is the power cord socket
From left to right, the rear panel is:
CD IN: The first group of analog signal input
AUX1 IN: The second group of analog signal input
AUX2/DAC out: Decoder analog output
The rear panel from left to right and top to bottom is as follows:
PRE OUT: Pre-level output
OPT: Optical input（Fangkou）
COAX: Coaxial input
Headphones everyone forum essence posts:
What are you doing to impress me? O1 overseas version OCTAVART audition（SOLO, Lehman in my impression, A1 and a bunch of headphones）
http://www.erji.net/read.php?tid=599902
The dance of beauty and the beast—— O1 overseas version audition report
http://www.erji.net/read.php?tid=607993
“I”Listen to 01 amp（HD650）
http://www.erji.net/read.php?tid=608395
First Firing Trial 01 Overseas Version: Decoding Part
http://www.erji.net/read.php?tid=606137
01Overseas version audition report-complete K701 version
http://www.erji.net/read.php?tid=607842
O1 overseas version audition summary（DT880 aluminum box phone line version + Creative X-Fi）
http://www.erji.net/read.php?tid=611127
Let the right sound enjoy the classical happiness O1 Overseas Guiyang listen
http://www.erji.net/read.php?tid=613838
Write to Brother Chu
http://www.erji.net/read.php?tid=614394
Voice from China---o1 overseas
http://www.erji.net/read.php?tid=615493
A good match for the second room and DAC! －－Talk about the O1 overseas version that I have heard
http://www.erji.net/read.php?tid=615556
The perfect combination of tuning and quality-O1 Overseas Edition My Attentive Listening (compared to DAC1U)
http://www.erji.net/read.php?tid=621465
The equipment is used to listen to music（sfb01/O1 overseas/solo/dac1u）
http://www.erji.net/read.php?tid=614234
O1 overseas hearing report, with simple comparison and thoughts
http://www.erji.net/read.php?tid=627825 Ling
Moisture and Hydration——Analysis of overseas O1 domestic headphone amplifier
http://www.erji.net/read.php?tid=632366
Xiaobai''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''s evaluation of the overseas version（Write conservatively）
http://bbs.headphoneclub.com/thread-113894-1-1.html
880 and 600 in the overseas version
In addition to guaranteeing extremely high quality, Oceana also made some thoughtful special designs for customers:
1）A pair of gain control switches are added to the amp board. After turning off this set of switches, the amp gain will be reduced by about 10db, so that friends who use high-sensitivity headphones or those who like low-volume listening can turn the volume knob when listening. Achieve a relatively large number of points, increase the convenience of volume control.
2）In addition to the standard set of headphone output jacks, a B output jack with internal resistance is added. This design is based on the increase of the p2s line of er4 and the output stage of solo. It has two functions:
firstThe design with internal resistance can make the sound of the earphone more active, so some sounds are more“wood” When the earphone is connected to port B, you can get a more vivid sound,
twoIt can reduce the noise output from the amp to the high-sensitivity earplugs. At the same time, for er4p users, using the B socket can directly save the overhead of a p2s line. In order to meet various needs, these two resistors are welded on the front with large pads, so that friends with hands-on ability can also modify the resistance of the specific connected resistors according to their own earphone needs to achieve the best fit with the earphone.
Oceana has also prepared a complete set of input and output interfaces for customers on the back panel: the pure amp has 3 sets of analog inputs and provides a set of front-pole output terminals, while the decoded version has an optical input and a coaxial input. Two sets of analog input, one set of decoding output and one set of front pole output terminals, equipped with complete interfaces greatly facilitate everyone''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''s use.