MANLEY LABS OASIS Phono Stage — Preamp / DI
MANLEY LABS OASIS Phono Stage — Preamp / DI
Manley Labs OASIS is an all-tube stereo MM/MC phono stage derived from the Chinook design and built around four 6922 dual triodes. It uses cascaded 6922 gain stages, passive RIAA equalization, a 6922 White Follower output driver and Manley Power switch-mode supply technology.
Specifications
Circuit
| Product type | All-tube stereo MM/MC phono preamplifier |
|---|---|
| Tube complement | 4 x 6922 dual triodes; two gain-stage tubes and two output-stage tubes |
| Equalization | Precision passive RIAA equalization |
| Output stage | 6922 White Follower output driver |
| Power supply | Manley Power regulated switch-mode supply |
Cartridge Setup
| Cartridge types | Moving magnet and moving coil |
|---|---|
| Gain | 45 dB, 50 dB, 60 dB or 65 dB selectable |
| Resistive loading | 31 options from 26 ohms to 800 ohms plus 47 kohms |
| Capacitive loading | 7 selections from 50 pF to 350 pF |
| Adjustment method | Rear-panel DIP switches |
Audio Performance
| Riaa deviation | Less than +/-0.5 dB, 20 Hz to 20 kHz |
|---|---|
| Crosstalk | 82 dB at 1 kHz or 10 kHz |
| Dynamic range | 102 dB typical, A-weighted |
| Output impedance | 104 ohms |
| Recommended load | Minimum recommended load 2,500 ohms |
Physical and I/O
| Connections | Unbalanced RCA input and output connections |
|---|---|
| Dimensions | 17 x 14 x 3.5 in (W x D x H) |
| Manufacturing | Hand-assembled in Southern California |
Fit and constraints
Intended use
Constraints
To use it
Questions
Which connections, drivers, operating systems, and sample rates are supported by this exact revision?
Ask before you buy via contact. Confirm power, condition grade, and included items against the listing photos.
What cables, mounts, power supplies, or licenses are included?
Ask before you buy via contact. Confirm power, condition grade, and included items against the listing photos.
Is the current retailer listing new stock, demo stock, open box, or special order?
Ask before you buy via contact. Confirm power, condition grade, and included items against the listing photos.
Description
Manley Labs OASIS is an all-tube stereo MM/MC phono stage derived from the Chinook design and built around four 6922 dual triodes. It uses cascaded 6922 gain stages, passive RIAA equalization, a 6922 White Follower output driver and Manley Power switch-mode supply technology. Rear-panel DIP switches provide cartridge matching with selectable gain of 45, 50, 60 or 65 dB, 31 resistive load options from 26 ohms to 800 ohms plus 47 kohms, and seven capacitive loading settings from 50 pF to 350 pF. Manley specifies RIAA deviation under +/-0.5 dB from 20 Hz to 20 kHz, 82 dB crosstalk, 102 dB typical A-weighted dynamic range and 104 ohm output impedance. Retailer listings cite RCA/unbalanced input and output connections and dimensions around 17 x 14 x 3.5 in; accessible pages did not expose GTIN.