AfterDark. Giesemann Reference SFP Optical Isolator PA1 - Network Conditioner

AfterDark. · March 15

AfterDark. Giesemann Reference SFP Optical Isolator PA1 - Network Conditioner

A mini SFP Optical Isolator produced by AfterDark.

gives a significant improvement on sounding

designed based on Project ALPHA program

with one well respected member in Audiophilestyle.

To honor that moment, we invite all

Audiophiles to share the happyiness

with friends

The one-of-a-kind creation was designed especially for one serious audiophiles in audiophilestyle.com to connect the AfterDark. Trifecta Extreme Giesemann Clock on the audiophile system. The device is made by two motherboards inside that were individually working and seperated in two layers on Carbon Fiber AudiophileMAT at 3mm and 1mm thickness for best isolation. These existing arrangement are reconstituted as parts to bring the whole system to another levels.

The Giesemann Clock Sync Module (GCSM) will either accepts external inputs of 10M Reference Master Clock Signal or works with internal OCXO. Two versions would be made to orders.

Purchase Link

The SFP Optical Isolator or Media Convertor will re-clock by GCSM to provide the best SFP to LAN signal to Music Server or Network Endpoint. The SFP Isolator PA1 not only changes in the overall sounding but brings all micro details and extracted them in precise timing with lowest possible jitter.

Audio is very vulnerable to noise. There are many types of noise that can negatively affect audio quality, but the noise that has the biggest impact on computer streaming is EMI, RFI, and impulse noise .

The main role of SFP Isolator PA1 is to block EMI noise coming from the lan cable of Router and Music Server. RFI noise that enters beyond the sheath is a problem at the cable end, so it can be solved with a optical fiber cable. However, no matter how well shielded a lan cable is, it cannot completely block out RFI noise.

Giesemann Reference SFP Isolator PA1 is a device that uses Optical Fiber with Giesemann OCXO precision clocking technology to remove RFI noise and impulse noise coming in from cables, and revive or reclocking the LAN signal for Audiophiles system.

The advantage:

The density in the sound image is increased, the color of the sound is revived, the sound of the singer's breathing, and the lingering sound that lasts until the end improves the sense of space and air, and the tone becomes more vivid and dense, allowing for musical nuances even in digital. Your sensibilities will be revived, and your music will start to sound more musical.

The sound stage is much wider and opened up with 3D and improved focusing, quietness, clarity, purity, detail, and precision , while OCXO increase the precision and microdetail extraction with more refine backgrounds, the smoothness and microdynamics will be much better represented and created spatial region.

The Audio Note Bi-Polar KENSAI Capacitor will be used for sound tuning

Connection matrix:

Method 1: Connect the SFP Isolator PA1 to the Lan port of the upstream devices. E.g. Music Server , Internet Router

Method 2: Connect a SFP Isolator PA1 to the LAN port of the DAC.

Method 3: Dual SFP Isolator PA1

Connect one SFP Isolator PA1 to the upstream LAN port.
Then connect another SFP Isolator PA1 to the DAC's LAN port.
Although the installation cost will increase, the performance of the SFP Isolator will give you the best effect.

Behind the minimise design of the mini SFP Optical Isolator, the internal components and parts is precision apply during the assembly process by soldering the chips with industrial graded signal cable to nearest 1mm, the process illustrating the hand craftsmanship that went into creating this entirely unique devices, which is highly skill intensive and cannot be made in today commercial standand procedure.

Compataible to most SFP modules including Cisco, Finisar, Sonoro SFPs and UpTone EtherREGEN

Giesemann Reference SFP Optical Isolator
Compatible optical fiber		Multimode (2 cores) or Single Mode
Terminal shape	UTP side	RJ-45 type
	optical fiber side	2-core LC terminal
Transmission speed	UTP side	10Mbps/100Mbps/1000Mbps
	optical fiber side	1000Mbps
External 10M Reference Master Clock OCXO Impendance		50ohms or 75ohms
Required Power-supply voltage		5V DC 2A (Gold Plated DC Socket)
Maximum power consumption		2.8W
Size (width x height x depth)		15×12×7cm
weight		638g (body only)
accessories		Cisco AOC Cable (Optional)
Cisco AOC SFP optical transceiver (Optional)
Terminal shape		2-core LC terminal
Transmission speed		1000Mbps
Size (width x height x depth)		W13.4×H8.5×D56.5 mm
weight		25g

AfterDark. · March 27

The ALPHA Project will initated a made to order for Audiophile. The final product below is a unique piece for one Audiophile.

All version of PA1 will be fine tune with Audio Note KENSAI Bi-Polar Audio Grade Capacitor for sound tuning.

The KANSAI Capacitor will be hand solder with Audio Grade Silver (Ag) 6% Silver Solder.

AfterDark. · April 19

The sound of PA1 Network Conditioner is amazing good. Every PA1 is hand solder and handcrafted by AfterDark. with a lot of tweak and refinement on each details and materials.

We are excited to informed that the PA1 will be on show at the High End Munich 2024.

One of the audiophilesyle member is using the build in Giesemann OCXO version:- This is time to upgrade.

AfterDark. · April 21

AfterDark. are celebrating the up coming event on HighEnd Munich 2024. 🙂

Please feel free to share the discount code with friends.

We love to hear more music lover to enjoy this great product.

Discount code: PA1

AfterDark. · May 6

We just completed the build and testing last weekend. The second batch order purchased from 23 April to 30 of April will be dispatched to post office on Monday. 😄

Purchase Link

AfterDark. · May 9

We are delighted that the lastest development of PA1 is just on time to make delivery on show for High End Munich 2024.😀

The PA1 wlll bring significant improvement on sounding, the music will be transparent, analog with high resolution with lot of details at the background.

AfterDark. · May 11

More PA1 is testing in progress. The 3rd batch order purchased from 05 May to 9 May will be dispatched to post office today. 😄

The PA1 will unlock the performance for DAC and Network Streaming Music.

Purchase Link

AfterDark. · May 14

AfterDark. is delighted to have successful shows at HighEnd Munich 2024. 🙂

Please feel free to share the discount code with friends.

We love to hear more music lover to enjoy this great product.

Discount code: PA1

AfterDark. · May 17

We are quite happy to hear audiophiles enjoy this amazing PA1.

Please feel free to forward the discount code for all audiophile's friends. This is time to upgrade and unlock the performance on streaming music. 😄

Discount Code: PA1

Purchase Link

AfterDark. · May 20

Thanks!!!!

More PA1 is testing in progress. The 4th batch order purchased from 12 May to 18 May will be dispatched to post office tomorrow. 😄

All PA1 this batch are build in Giesemann OCXO Master Clock. Thanks for the refereral friends. 😃

Purchase Link

Discount Code: PA1

AfterDark. · May 25

We are quite happy to hear audiophiles enjoy this amazing combo of both NETone switch and PA1.

Please feel free to forward the discount code for all audiophile's friends. This is time to upgrade and unlock the performance on streaming music. 😄

Discount Code: PA1

Purchase Link

AfterDark. · June 7

The very first high end customers, using the method 3 to connect dual PA1 as below and it is just amazing cascade setup and re-clocking experiences. 😃

Purchase Link

Discount Code: PA1