Yes, a Harman Kardon 930 Bluetooth connection needs no soldering. The 930 is the Twin Powered series' top-of-the-line receiver from 1972: two large transformers, one power supply per channel, rated a very conservative 45 W per channel into 8 ohms at $399.95. As with its 630 and 730 siblings, the documented input table is thin, so connection rows stay qualitative.
Figures on this page were checked September 2026. Every table row carries its source; the input rows stay qualitative because no sensitivity table has surfaced for this model.
Key figures for the 930
| Item | Value | Notes | Source |
|---|---|---|---|
| Production run | 1972 | Top of the x30 series; MSRP $399.95 (the 630 page notes $479.95 in its lineup discussion) | CR |
| Power output | 45 W/ch @ 8 Ω | "a very conservative 45 watts per channel" per period coverage | CR |
| Design signature | Twin Powered | Dual power supplies, one per channel, two large transformers | CR |
| Input lineup | 2 Phono · 2 Tape · 2 Aux | One input-sensitivity line documented at 1.5 V, input not specified by the source; other figures not published | CR |
| Weight | 13.2 kg | Blackout dial styling; dimensions 432 × 121 × 350 mm | CR |
Source codes: CR classicreceivers.com. Data as of September 2026. This profile rests on period coverage; hifi-wiki has no 930 entry with technical data, and the input-sensitivity table is not part of the documented record.
Plugging into the 930
AUX input
RecommendedWith two AUX inputs on the panel, a line-level Bluetooth receiver with RCA output has a spare always waiting; sensitivity figures for the 930 are not part of the documented record, so this page stays qualitative.
Tape monitor loops
Good alternativeTwo tape loops route through the monitor switch, the fallback the Twin Powered profiles document. Hitch the source to a loop's play jacks, choose tape to listen, and return the monitor to off for the other sources.
Phono inputs
Not for line-levelBoth phono stages are cartridge inputs. Bluetooth at line level would overload them, and the turntables would lose their inputs.
930 setup in three moves
- Bluetooth heads to AUX
The two tape loops stay with recorders; the wireless source lands on AUX.
- Set it up
RCA output from the Bluetooth receiver into AUX, USB power attached, and pair your phone once.
- Turn it up gently
Volume down, select AUX, and raise from there. Where the adapter offers fixed/line output, take it.
Top of the Twin Powered line
- The top of the Twin Powered line (verified): period coverage calls the 930 the top-of-the-line Harman Kardon of its era, rated a very conservative 45 W/ch, and this site's 630 profile already cross-references it that way in the lineup discussion.
- Two transformers, one per channel (verified): the 930 page's Twin Powered note is the most concrete in the series, dual power supplies with two large transformers shown in period interior photos, the architecture the 630 and 730 profiles document from the outside.
- Conservative by design (verified): "very conservative" is the period wording, and it matches the series pattern this archive documents, where the 630's rating conventions likewise drew a spread of quotations.
Kit for adding Bluetooth to the 930
- Bluetooth receiver with RCA output; LDAC or aptX HD first choices
- RCA cable measuring 0.5–1 m
- A USB supply to run the receiver
FAQ
Use the AUX input for a Bluetooth receiver with RCA output and select AUX; if AUX is occupied, one of the two tape loops through the monitor switch is the documented alternative. No internal modification is needed.
Period coverage rates it a very conservative 45 W per channel into 8 ohms, with an MSRP of $399.95, and this site's 630 profile already cross-references the 930 as the 45-watt top of the line above the 630's 30 W.
Yes, and the 930 page documents it most directly: dual power supplies, one for each channel, with the two large transformers shown in period interior photos. The same architecture runs through the 630 and 730 profiles in this archive.
Period coverage dates the 930 to 1972, at the top of the x30 series alongside the 30-watt 630, in the blackout-dial Harman Kardon styling of the early seventies.
blafili B3 Bluetooth Music Receiver
RCA + XLR + optical out, LDAC and aptX HD, OLED status display. Matches the 930 line-level inputs without adapters.
- Top-of-the-line positioning, MSRP $399.95, "a very conservative 45 watts per channel", Twin Powered with dual power supplies one per channel and two large transformers shown in period interior photos, blackout dial, input lineup (2 Phono, 2 Tape, 2 Aux; one input-sensitivity line documented at 1.5 V), dimensions 432 × 121 × 350 mm, weight 13.2 kg / 29 lbs, year 1972: classicreceivers.com/harman-kardon-930, accessed 2026-09-25
- Cross-reference: the 630 profile on this site (classicreceivers.com/harman-kardon-630) lists the 930 as the top-of-the-line at 45 wpc and $479.95 in its lineup discussion, accessed 2026-09-25