Up for bidding is 1 pc of high quality audio op amp OPA211ID chip (in SOIC-8 package) for high-end audio application, made by Texas Instruments.  It is an outstanding single channel op amp.

Sonic reference: 
Extraordinary sound stage, the sounds it delivers are clearer and more independent (more 3-dimensional). Some of my customers mentioned that the sound processed with this chip would sound very "high-end" quality.

This is an authentic chip. We also sell it in the following form:

1.  1 pcs of OPA211ID converted to a [DIP-8 package, single channel op amp] with PCB adapter   US$36.56/pc
2.  2 pcs of OPA211ID converted to a [DIP-8 package,  dual channel op amp] with PCB adapter    US$73.12/pc   (This version is a lot better than OPA211AIDDA)

Soldered with high quality solder (3% silver) which is approved by SONY or you may choose the following optional branded solder: (It will take longer lead time to customize)

1. Mundorf M-solder Silver/Gold - high-end audio solder which contains: 3.8% Silver, 0.038% Gold 

2. Oyaide SS-47 - high purity 4N (over 99.993％ Sn), 4.7% Silver

3. Kester 3% Silver



We use only premium gold-plated adapters, and gold-plated pin headers, (coating thickness is strictly requested)

All soldered products are qualified IPC soldering standard.


We also have other authentic high quality op amps such as AD827SQ/AD843SQ/ADA4637-1BRZ/AD8620BRZ/OP42EZ/AD843BQ from ADI and OPA128SM/OPA627SM/OPA627BP/OPA2211AIDDA/LME49990/LME49720HA from TI. Please feel free to ask and request photo of them. Be ware that there are lots of fake/refurbished op amp on the market..

Shipping Method: Registered Airmail by  CHUNGHWA POST - Taiwan's official postal system  (with Tracking number)