| GSM | (+31)(0)6-15545270 (monday till saturday from 9am till 6pm) |
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| KvK | 51628147 HEA VOF, Venlo |
| BTW | NL850104452B01 |
| Bank | 4711559 t.n.v. Hay-End Audio |
| IBAN | NL67INGB0004711559 t.n.v. Hay-End Audio |
| BIC | INGBNL2A |