11x Philips Amperex SQ E188CC 7308 Heerlen? Holland Top 6922 E88CC CCa Upgrade

The breath of life, philips amperex nl e188cc 7308 are top sonic echelon vintage audiophile tubes, sought after by enthusiasts! The long life 10k hour design, rugged internals (photographic history attached), and low noise, put it above the 6922/e88cc/cca. These also have more low-end bass than any tube in the 6dj8 family, and a taller birds-eye view expansive revealing sound stage. This makes them very versatile for a variety of genre types, including vocals, acoustics, instruments, and percussion delineation. Dutch house sound is sparkley, lively, and rich in warm resolve, w/ a more forward mid-band than usa.

The holographic transparent imaging reveals both even and odd harmonics, emphasizing vinyl-style distortional qualities. Transform your playback to a higher level of fidelity, pin point bass accuracy, deep resolving air, all w/ incredible definition. The unique stage dynamics, tonal articulation, and full frequency presentation, all contribute to the collectible amperex lore.

Sq tubes are long life, special quality cathodes, ultra high tolerances, premium vibration resistance, and high reliability. Great for mono blocks, tube mics rode k2 ntk at-4060 audio technica, and for circuits that are tough on 6922 e88cc lifetime! Set of 11 x old stock 7308 e188cc philips amperex gold pins, authentic nl heerlen holland. Carefully curated and twice tested, special quality / assorted set, w/ philips amperex boxes included! + undergoes a complimentary refurbish and deoxit process value added quality control. Full mutual conductance gm test, nice balance: + life test (longetivity indicator).

+ leak / short / gas check. Our high power output test simulates circuits and applies up to 250v, more than many other testers. Give up to 150+ hours w/ your amps specific voltage to fully cure / break-in. Vintage authentic hifidelity audiophile / preamp / power / mic tube curation by caliacoustics. New arrivals, reserve/request options +.

+ rare true-nos sealed box. 1 true holographic sound reproduction (amperex usa/heerlen holland + telefunken/siemens germany + mullard/brimar britain). 2 full frequency pleasant extended warm dynamics (heerlen holland + siemens germany + mullard/brimar britain + tesla czech). 3 natural organic tone w/ flat response, warm rich imaging (telefunken/siemens/valvo/lorenz germany + mullard mitcham britain). 4 precision bass w/ depth and lush musical resolve (heerlen holland + siemens/valvo germany + ei yugo + tungsram hungary). 5 dynamics, musical warm sound stage (amperex usa/heerlen holland + siemens/valvo germany + mullard blackburn britain). 6 clear layered detail, subtle tone compression (telefunken/lorenz germany + tungsram hungary + tesla czech + toshiba japan).