Yes, a Marantz 2325 Bluetooth connection needs no soldering. Best path: a Bluetooth receiver with RCA output into the AUX input (180 mV into 100 kOhm, per the spec sheets). If AUX is taken, use a Tape loop. Rated 125 W/ch into 8 ohms, it was Marantz's flagship receiver of its day, and the strongest Marantz documented on this shelf.
Figures on this page were checked September 2026. Every table row carries its source; the two sources date the run slightly differently and both are shown.
2325 by the numbers
| Item | Value | Notes | Source |
|---|---|---|---|
| Production run | 1974–1977 | Came out around 1974 at $799.95 per period coverage; hifi-wiki dates the run 1975-1977 | HW, CR |
| Power output | 125 W/ch @ 8 Ω | Continuous; 250 W sine per channel into 4 ohms; THD 0.1%; power bandwidth 6.7-80,000 Hz | HW, CR |
| Phono input | 1.8 mV / 47 kΩ | The Marantz house convention documented across this archive | HW |
| Line inputs | 2 × Tape · AUX | High level 180 mV / 100 kOhm; dubbing in/out for a recorder; Main In 1 V / 55 kOhm | HW |
| Quad output | FM Quadradial jack | An output for a four-channel decoder, per the outputs list | HW |
| Weight | 22.5 kg | 49.5 lbs per period coverage; 500 W consumption; damping factor 70 | HW, CR |
Source codes: HW hifi-wiki.com · CR classicreceivers.com. Data as of September 2026. Production years differ slightly between the two sources and both are shown.
Where the 2325 takes a source
AUX input
RecommendedThe high-level input takes 180 mV into 100 kOhm, matching the 2245's AUX, while the late-B 2285B runs the same 180 mV on a 20 kOhm impedance. A line-level Bluetooth receiver with RCA output suits the 180 mV / 100 kOhm input.
Tape monitor loops
Good alternativeTwo tape play inputs at the same high-level spec come with dubbing in/out jacks and 200-ohm record outputs for a recorder. Run Bluetooth through a loop by way of its play jacks, engage Tape Monitor to hear it, and disengage for the other sources.
Phono input
Not for line-levelThe MM phono stage is expecting a cartridge's 1.8 mV. A line-level Bluetooth source would overload the stage, leaving the turntable without its input.
A three-step hookup for the 2325
- AUX for the wireless link
The tape loops and dubbing jacks serve recorders; AUX serves Bluetooth.
- Hook up and pair
RCA out of the Bluetooth receiver to AUX, a USB lead for power, and one pairing with your phone.
- Raise with care
Volume low to begin, AUX chosen, then up in small steps. If the adapter provides fixed/line output, select it.
2325 quirks worth knowing
- The flagship title came with receipts (verified): period coverage positions the 2325 at the top of the 22xx lineup, and the specification sheet's 125 W/ch with a 6.7-80,000 Hz power bandwidth and a damping factor of 70 back the title with numbers no smaller Marantz on this shelf carries.
- A black faceplate exists (verified): period coverage notes a 2325 version with a black faceplate alongside the standard silver, a variant note worth knowing before pricing faceplate condition.
- Quad output, not quad input (verified): the FM Quadradial jack feeds a decoder or recorder; the documented inputs stay stereo, so Bluetooth belongs on AUX as everywhere else in the Marantz shelf.
The short list for the 2325
- Bluetooth receiver with RCA output; LDAC or aptX HD carry the preference
- 0.5–1 m RCA cable, single run
- A USB port to power the receiver
FAQ
Plug a Bluetooth receiver with RCA output into the AUX input and select AUX. If AUX is occupied, use a Tape In loop and press the Tape Monitor button. No internal modification is needed.
Per the specification sheets: the high-level inputs, 2× Tape Play and AUX, take 180 mV into 100 kOhm, and the phono stage takes 1.8 mV into 47 kOhm. Main In is rated 1 V / 55 kOhm, and Tape Rec outputs sit at 200 ohms impedance.
Continuous power is rated 125 W per channel into 8 ohms, with 250 W per channel sine wave into 4 ohms, at 0.1% distortion and a power bandwidth of 6.7 Hz to 80,000 Hz. Period coverage calls it Marantz's flagship receiver at the time.
On the output side: the rear panel carries an FM Quadradial jack, like the 2245's. It feeds a four-channel decoder or recorder; nothing on the documented input side takes a quad source in.
blafili B3 Bluetooth Music Receiver
RCA + XLR + optical out, LDAC and aptX HD, OLED status display. Matches the 2325 line-level inputs without adapters.
- Full connection and amplifier specifications (2× Tape Play and Aux 180 mV / 100 kOhm; Phono 1.8 mV / 47 kOhm; Dubbing in/out; Main In 1 V / 55 kOhm; FM Quadradial output; Pre Out 900 ohm; 2 speaker pairs; 125 W/ch at 8 ohms, 250 W sine at 4 ohms; THD 0.1%; damping factor 70; power bandwidth 6.7-80,000 Hz; weight 22.5 kg; 500 W consumption): hifi-wiki.com/index.php/Marantz_2325, accessed 2026-09-25
- Came out around 1974 at a list price of $799.95, discontinued around 1976, 125 W/ch into 8 ohms, weight 49.5 lbs, WC-123 case fits, black-faceplate version exists, flagship of the 22xx lineup at the time: classicreceivers.com/marantz-2325, accessed 2026-09-25