The Bowers & Wilkins 607 & 606 S3 Standmount Speakers & Matching Stands Custom Bundle means that you can configure your own standmount speaker pair with Bowers & Wilkins award-winning 600 S3 series. Choose between the larger 606 bookshelf speakers & the smaller 607 bookshelf speakers in their range of finishes. Then select the finish of FS-600 S3 stands to match your chosen speakers. Configuring your system with our custom packages will save you time & money!