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                    iDefender+
                
                                
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1. DC 15V Power input
The iPhono3 Black Label must ONLY be powered by 15 volts.
Tip: For best performance, use the included ultra-low noise iPowerX 15V power  
supply.
2. EQ Curves Selection
This is the EQ curves selection switch. 
Tip: For best performance switch to the setting most suited to your LP's EQ curve. 
3. RCA analogue output
This is an analogue output.
micro
ifi-audio.com
Tip: EQ Curves
Columbia*: most Columbia/CBS, Epic, EMI (records originally issued under 
Columbia) etc.
RIAA: standard EQ curve for all records issued after 1980s and some after 1950s.
There are four different types of RIAA EQ available, e.g. eRIAA, IEC, RIAA, eRIAA+IEC. 
Adjust it via the micro switches located on the underside of iPhono3 Black Label. 
Decca*: most Decca, London, Deutsche Grammophon (DG), Archiv, EMI, Argo, NAB etc.
* For pre-1980 records
If an LP sounds overly bright, edgy, thin and lacking scale and 
body via RIAA EQ, please try Decca EQ.
If an LP sounds both too bright and with muddy overblown 
bass, please try the Columbia EQ.
Tip: For further guidelines please see the enclosed instruc tions or go to our website 
https://ifi-audio.com/iphono-calculator/
7. MM input
Suitable for MM and high-output MC cartridges with an output 
voltage >1mV.
Ver1.1
INPUTS
MM
MC
R
L
R
L
7
4
5
2
31
CO LUM BIA
RI AA
DEC CA
OUTPUTS
R
L
15VDC
8
8. LEDs
Ready
®
Tube State
Class A
Class A TubeState® in operation
Power on
4. MC input
This is a MC input suitable for MC cartridges to an output 
voltage ≤1mV.
5. Ground
This is iPhono3 Black Label's ground, please connect it to the 
turntable's grounding wire.
6. Settings Switches
The settings switches are located on the underside of iPhono3 
Black Label. 
Tip: For best sound performance adjust the gain, load and EQ curve settings in 
accordance with your preference, turntable's specifications and LP's EQ curve. 
6
iPhono3    
B
B
B
BBLA
LA
LA
LALAC
C
C
CCK
K
K
KK L
L
L
LLA
A
A
AAB
B
B
BBE
E
E
EEL
L
L
LL
Technologies
•   6 x EQ curves: RIAA/eRIAA/IEC/eRIAA+IEC/Decca/Columbia
•   Ultra-wide gain options: 36-72dB
•   Direct-coupled, servoless Class A TubeState amplifier
•   Nichicon audio-grade power supply capacitors
•   ELNA Silmic ll capacitors, Panasonic OSCON aluminum polymer capacitors
•   High performance JFET opamps
•   Hand-matched ultra-low noise bi-polar transistors
Specifications
Input voltage:                     15V/1.2A, AC 100 -240V, 50/60Hz (with iPower X)
Frequency response:              10Hz – 100KHz (±0.3dB)
      20Hz – 20kHz (±0.2dB)
Dynamic range:                     MM(36dB): >108dB (A-weighted) 
      MC(60dB): >106dB (A-weighted)
SNR:                        MM(36dB): >85dB (A-weighted re. 5mV) 
      MC(60dB): >85dB (A-weighted re. 0.5mV)
Overload margin:                    MM(36dB): >26dB (re. 5mV, @ 1% THD)
      MC(60dB): >22dB (re 0.5mV, @ 1% THD)
Crosstalk:                  -< 71dB(1kHz)
Max undistorted output:      7V (Load ≥ 600Ω, THD ≤1%) 
THD:      <0.005% (MM 36dB 1V out 600Ω Load)
Output impedance:                  <100Ω
Power consumption:                <5W 
Dimensions:                      178 x 64 x 26 mm
      7.0” x 2.5” x 1” 
Weight:                        265 g (0.58 lbs) 
Warranty period:                     12 months
Specifications are subject to change without notice.
Produktspecifikationer
| Varumärke: | IFi Audio | 
| Kategori: | Inte kategoriserad | 
| Modell: | iDefender+ | 
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