A Marantz 2230 Bluetooth hookup takes one RCA pair into the AUX input (180 mV line level). AUX occupied? Use the Tape Monitor path, or the front-panel Dubbing In jack for a quick temporary feed. The honest 30 W/ch output stage rewards an LDAC or aptX HD source. No soldering, no internal modification.
Spec snapshot
| Item | Value | Notes | Source |
|---|---|---|---|
| Production run | 1972–1975 | Examples stamped into early 1976 | HW, CR |
| Power output | 30 W/ch @ 8 Ω | Continuous, both channels driven | HW, CR, SM |
| AUX input | 180 mV / 100 kΩ | Line level, always active | HW, SM |
| Phono input | 1.8 mV / 47 kΩ | MM with RIAA, do not use for line-level | HW, SM |
| Tape circuit | 1 × monitor | Plus Dubbing In/Out jacks on the front panel | HB |
| Pre / Main | Pre out · Main in | Separable pre/power section | HW |
| Original price | ≈ $350 | 1972 USD, listed at $349.95 | CR, AK |
Source codes: CR classicreceivers.com · HB Marantz 2230 Handbook of Instructions · HW hifi-wiki.com · SM Marantz 2230 service manual (library.mikesservers.com) · AK AudioKarma community. Data as of September 2026.
Where to connect
AUX input
RecommendedLine level at 180 mV and always active. Select AUX on the source knob and the 2230 plays Bluetooth like any other component.
Tape Monitor path
Good alternativeFeed the Tape In jacks and press Tape Monitor to listen. The front-panel Dubbing In stereo jack reaches the same circuit, which makes a quick test hookup easy when an adapter cable is at hand. Switch the monitor button back afterwards.
Phono input
Not for line-levelThe MM stage applies RIAA equalization and high gain. A Bluetooth receiver already outputs line level, so phono will overload and distort, and the turntable loses its input.
Set up in three steps
- Pick the input
AUX when free, otherwise Tape In with the monitor button noted.
- Connect and power
Bluetooth receiver RCA out to the chosen input, USB power attached, pair once with your phone.
- Level check
Start the volume at minimum, select the input, then raise. Fixed/line output on the adapter if it offers the option.
Quirks and notes
- Gyro-Touch tuning (verified): the 2230 carries Marantz's flywheel dial with the gyro-touch wheel. A period detail worth knowing when you compare photos before buying.
- Speaker load rule (verified): with both speaker pairs switched on, the manual calls for 8 Ω or higher per pair, which keeps the combined load at the 4 Ω floor of the rating. A single pair of average home speakers is the normal case.
- 2230 vs 2230B (verified): the B is the later revision of the same receiver; panel details such as the balance control changed between versions (commonly reported). Bluetooth advice is identical for both.
What you need
- Bluetooth receiver with RCA output, LDAC or aptX HD preferred
- 0.5–1 m RCA cable
- USB power for the receiver, a phone charger is fine
FAQ
Plug a Bluetooth receiver with RCA output into the AUX input and select AUX. If AUX is taken, use the Tape Monitor path or the front-panel Dubbing In jack. No internal modification is needed.
The 30 W/ch rating is genuinely conservative, as Marantz ratings of that era were. It drives efficient bookshelf and midsize speakers comfortably in a home room. With both speaker pairs switched on, keep each pair at 8 ohms or higher.
Yes. The built-in moving-magnet stage is rated at 1.8 mV / 47 kΩ and is one of the reasons this model is liked. Keep the Bluetooth receiver on AUX so the phono stage stays free for the turntable.
The 2230B is the later revision of the same basic receiver. Panel details changed between the two versions, with the balance control cited most often by owners. Connection advice for Bluetooth is identical.
blafili R1 Bluetooth Receiver
Clean RCA output for the AUX input, no app required. The straightforward partner for a straightforward 30-watt Marantz.
Spotted something off, or own this receiver and want to share a photo? Write to yourfriends@blafili.com. Photos are published under CC BY-SA 4.0 with full credit to you; corrections are verified and applied with thanks.
Share a photo or correction- Input sensitivity and configuration: hifi-wiki.com Marantz 2230 page, cross-checked against the Marantz 2230 service manual (library.mikesservers.com)
- Market period, power rating, Gyro-Touch detail and $349.95 price: classicreceivers.com Marantz 2230 retrospective, with a 1972 purchase receipt on AudioKarma
- Tape Monitor circuit and front-panel Dubbing In jack: Marantz 2230 Handbook of Instructions