Pioneer SE-30
Pioneer's first big headphone push into America — and the period labs backed up the ad copy.
Overview
The SE-30 is one of those pieces that collectors stumble onto without realizing what they've found. It's a stereo headphone from Pioneer, imported into the UK by Shriro (UK) Ltd. and sold there for £12 12s — the pair illustrated in the trade press came with a 2.2 m cable and a 3-conductor jack plug.
What makes the SE-30 interesting isn't the price. It's that Pioneer didn't just advertise it — the company leaned on independent lab measurements to sell it. A Pioneer advertisement cited CBS Laboratories test data, as reported in High Fidelity in May 1968, showing a response curve variation of only 13 dB from 50 Hz to 13 kHz with reference to an average sound pressure level of 70 dB. Normalized, that curve came in at ±6.5 dB around 66.5 dB. Those aren't spectacular numbers by later standards, but for a headphone of this class and era they were respectable — and Pioneer knew it, because the ad reprinted the lab work rather than hiding behind adjectives.
Distortion figures from the same CBS testing were genuinely good: under 0.3% at 400 Hz measured separately on the left and right phones, and 0.5% and 0.6% respectively at 1 kHz. The response is reasonably flat through the midband, which is exactly what the ±6.5 dB normalized curve implies. It's not a headphone that flatters bad recordings, and it's not one that adds warmth that isn't on the tape.
Physically, the SE-30 shares a family approach with the sibling SE-50 — Pioneer's own advertising described that model's earcups as lightweight, comfortable, and vinyl covered, with cone-type woofers miniaturized from big speaker system design. The 2.2 m cable is generous for home listening; the 3-conductor jack plug was the standard of the day. Collectors note that the SE-30 was supplied with a permanent storage case, which is one of the reasons surviving examples turn up in better condition than you'd expect for a headphone of this age — the case did its job.
The SE-30 was part of a two-model push: Shriro imported both the SE-30 and the SE-50, the latter adding overall level and treble level controls in each earpiece and selling for £19 3s 8d. The SE-30 is the simpler, purer version — no controls, no tone shaping, just the driver and the cable. For collectors who want to hear what Pioneer's headphone engineering sounded like before the company started adding features, the SE-30 is the one to find.
Pioneer's own advertising billed the SE-30 as "perhaps the audiophile's ultimate buy in responsive, distortionless, headphone sound" — marketing copy, to be clear, not an independent verdict. But the CBS lab figures it reprinted gave that claim more backing than most ad copy of the period could muster. High Fidelity (May 1969, p.91) and Audio (May 1969, p.49) both ran Pioneer's headphone campaign, which leaned on the same measured-performance argument across the line. The SE-30's place in that campaign was as the entry point — the model that proved the concept before buyers stepped up to the SE-50.
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