The Telefunken ECC85/6AQ8 is a great tube, but its performance differs significantly depending on the specific construction. While I have tested two versions, both featuring the authentic Telefunken diamond mark on the bottom, the version with copper grid rods is by far the superior choice. Compared to the somewhat thin-bodied presentation of the standard metal grid rod version, the copper rod variant offers a much more solid and robust sound.
Both versions produce a very transparent sound with great air, but the copper rod version wins again when it comes to pure musicality. It stands out as one of the best ECC85 tubes I have ever listened to, performing great across the board without suffering from the “thinness” often associated with Telefunken, provided you avoid the standard rod version. An interesting practical tip is that the PCC85 and ECC85 can be used interchangeably in the majority of applications, since the PCC85 is typically cheaper, it serves as a fantastic alternative for those seeking this high level of performance at a lower price point.
Final Verdict: Highly Recommended, specifically the copper grid rod version for its superior body and musicality.
The Telefunken ECC85/6AQ8 is a great tube, but its performance differs significantly depending on the specific construction. While I have tested two versions, both featuring the authentic Telefunken diamond mark on the bottom, the version with copper grid rods is by far the superior choice. Compared to the somewhat thin-bodied presentation of the standard metal grid rod version, the copper rod variant offers a much more solid and robust sound.
Both versions produce a very transparent sound with great air, but the copper rod version wins again when it comes to pure musicality. It stands out as one of the best ECC85 tubes I have ever listened to, performing great across the board without suffering from the “thinness” often associated with Telefunken, provided you avoid the standard rod version. An interesting practical tip is that the PCC85 and ECC85 can be used interchangeably in the majority of applications, since the PCC85 is typically cheaper, it serves as a fantastic alternative for those seeking this high level of performance at a lower price point.
Final Verdict: Highly Recommended, specifically the copper grid rod version for its superior body and musicality.