Yes, a Yamaha CR-2040 Bluetooth connection needs no soldering. Best path: a Bluetooth receiver with RCA output into the AUX/CD input. If AUX is taken, use one of the two Tape loops. Rated 120 W/ch into 8 ohms at no more than 0.002% distortion, with both MM and MC phono inputs, it is the second receiver documented in this archive with a moving-coil phono stage.
Figures on this page were checked September 2026. Every table row carries its source.
Spec snapshot
| Item | Value | Notes | Source |
|---|---|---|---|
| Production run | 1979–1981 | Approx. 2,200 DM (1980); 1,000 W consumption; the CR series' top below the CR-3020 | HW |
| Power output | 120 W/ch @ 8 Ω | 20-20,000 Hz at no more than 0.002% THD per the service manual; period coverage calls the rating underrated at "less than 0.02%" | SM, CR |
| Phono inputs | MM 2.5 mV · MC 0.1 mV | MM impedance selectable 33/47/68/100 kOhm, per the service manual figures | SM |
| Line inputs | AUX/CD · 2 × Tape | Pre out and speaker terminals A, B, A+B; variable loudness; high/low filters; switchable processor loop | CR, HW |
| Tuner | AM · FM | Power meter with level/signal positions | CR, HW |
| Weight | 18.9 kg | 1,000 W consumption; damping factor 40 | HW, SM |
Source codes: SM Yamaha CR-2040 service manual (audiocircuit.dk scanned copy, figures per specification transcription) · CR classicreceivers.com · HW hifi-wiki.com. Data as of September 2026.
Where to connect
AUX/CD input
RecommendedThe always-active line-level spare, documented as the Aux/CD position in the period input list. A line-level Bluetooth receiver with RCA output connects here and behaves like any other source on the selector.
Tape monitor loops
Good alternativeTape 1 and Tape 2 with record outputs, plus a switchable processor loop documented in the feature list. Feed a loop's play jacks, select the tape position to listen, and switch the monitor back off for the other sources.
Phono MM/MC inputs
Not for line-levelThe moving-magnet stage expects 2.5 mV and the moving-coil input just 0.1 mV. Line-level Bluetooth output would overload both by orders of magnitude, and the turntables would lose their inputs.
Set up in three steps
- Pick AUX/CD
Keep the tape loops free for recorders; the AUX/CD position is the natural Bluetooth home.
- Connect and power
Bluetooth receiver RCA out to AUX, USB power attached, pair once with your phone.
- Level check
Volume low, select AUX, then raise. Fixed/line output on the adapter if it offers the option.
Quirks and notes
- An underrated rating, on the record (verified): period coverage states the 120 W/0.02% figure is probably underrated, and it sits the CR-2040 just below the CR-3020 flagship documented in period pricing at $1,500. Against this site's Yamaha shelf, it out-runs the CR-1020's 75/70 W and the CR-1000's 70 W.
- A moving-coil input, rare here (verified): the MC 0.1 mV input makes the CR-2040 the second receiver in this archive with a documented moving-coil stage, a turntable-side feature that has no bearing on the Bluetooth path.
- The processor loop is switchable (verified): hifi-wiki's feature list notes a switchable processor loop alongside the high and low filters, so external processing can be inserted and bypassed without rewiring.
What you need
- Bluetooth receiver with RCA output, LDAC or aptX HD preferred
- 0.5–1 m RCA cable
- USB power for the receiver
FAQ
Plug a Bluetooth receiver with RCA output into the AUX/CD input and select AUX. If AUX is occupied, use a Tape input through the tape monitor. No internal modification is needed.
Per the service manual figures: phono MM 2.5 mV with selectable impedance (33, 47, 68 or 100 kOhm) and a moving-coil input at 0.1 mV; Aux/CD and the two tape loops for line-level sources. Period coverage lists the same Aux/CD, Phono MM/MC, Tape 1/2 lineup.
Rated 120 W per channel into 8 ohms from 20 Hz to 20 kHz at no more than 0.002% distortion per the service manual, a figure period coverage calls underrated. It sat below the CR-3020 flagship, which listed at $1,500.
Yes, per the service manual figures: 0.1 mV for MC alongside the 2.5 mV MM input. That is rare among the receivers documented on this site and matters for turntable planning, not for Bluetooth, which stays on AUX.
blafili B3 Bluetooth Music Receiver
RCA + XLR + optical out, LDAC and aptX HD, OLED status display. Matches the CR-2040 line-level inputs without adapters.
- Rated power (120 W/ch into 8 ohms, 20-20,000 Hz at no more than 0.002% THD), phono inputs (MM 2.5 mV with selectable impedance 33/47/68/100 kOhm; MC 0.1 mV), frequency response 5 Hz-100 kHz, damping factor 40: Yamaha CR-2040 service manual (audiocircuit.dk/downloads/yamaha/Yamaha-CR2040-rec-sm.pdf, scanned copy), figures per the specification transcription, accessed 2026-09-25
- Period coverage: "Probably underrated at 120 watts per channel, with less than 0.02% THD"; inputs Aux/CD, Phono MM/MC, Tape 1, Tape 2, Pre out, Speakers A, B, A+B; variable loudness; CR-3020 flagship comparison at $1,500: classicreceivers.com/yamaha-cr-2040, accessed 2026-09-25
- Production years 1979-1981, weight 18.9 kg, approx. 2,200 DM (1980), 1,000 W consumption, feature list (high/low filters, record selector, switchable processor loop, power meter, adjustable crest frequency of tone controls): hifi-wiki.com/index.php/Yamaha_CR-2040, accessed 2026-09-25