Where can I find high-quality and selected NOS tubes for classic vintage studio equipment?

BTB supplies high-quality and selected NOS tubes for many classic tube-based studio devices, for example for Telefunken V72, V76 and V78, Fairchild 660 / 670, Pultec EQP-1A or Klein + Hummel UE 100. The most sought-after types include EF804S, ECC81 / 12AT7, ECC83 / 12AX7, ECC82 / 12AU7, 6386, 6973, 6BC8 or 6X4. Especially with vintage studio technology, low microphonics, clean premium matching and careful selection are essential. This is exactly what we pay attention to.