One thought on “Boonton 102A/Type 45 Black Plates”
The Boonton 102A is a fascinating piece of audio history that often flies under the radar of even seasoned collectors. While it shares a model number with the Western Electric 102A, it is vital to note they are completely different animals; this is not a telephone repeater tube, but a high-performance variant of the legendary type 45 power triode. Originally manufactured by RCA, these specific units were sent to Boonton Radio Corporation, where they underwent a rigorous selection process and were held to much stricter technical specifications for use in precision Q-meters. This pedigree makes them a “best of the best” subset of the standard production runs.
In the listening room, the Boonton 102A delivers a sonic profile that remains faithful to the 45 family’s reputation: inherently warm, transparent, and relaxed. While it may not quite capture the ethereal magic or “holy grail” status of the earlier Globe-style 45s, it easily stands out as one of the finest ST-shape tubes ever produced. Its background is remarkably quiet, likely a byproduct of the strict industrial tolerances required by Boonton’s original test equipment.
Final Verdict: For those looking to elevate their 45-based amplifier, the Boonton 102A is a rare gem. It offers a refined, premium take on the classic RCA sound and is definitely worth hunting down if you can find a tested pair.
The Boonton 102A is a fascinating piece of audio history that often flies under the radar of even seasoned collectors. While it shares a model number with the Western Electric 102A, it is vital to note they are completely different animals; this is not a telephone repeater tube, but a high-performance variant of the legendary type 45 power triode. Originally manufactured by RCA, these specific units were sent to Boonton Radio Corporation, where they underwent a rigorous selection process and were held to much stricter technical specifications for use in precision Q-meters. This pedigree makes them a “best of the best” subset of the standard production runs.
In the listening room, the Boonton 102A delivers a sonic profile that remains faithful to the 45 family’s reputation: inherently warm, transparent, and relaxed. While it may not quite capture the ethereal magic or “holy grail” status of the earlier Globe-style 45s, it easily stands out as one of the finest ST-shape tubes ever produced. Its background is remarkably quiet, likely a byproduct of the strict industrial tolerances required by Boonton’s original test equipment.
Final Verdict: For those looking to elevate their 45-based amplifier, the Boonton 102A is a rare gem. It offers a refined, premium take on the classic RCA sound and is definitely worth hunting down if you can find a tested pair.