Brochure
SPECS / SPEEDS & FEEDS
DELTA
™
PRE AMPLIFIER
PRE
GENERAL
Gain Range -93dB to +14dB
Channel Matching +/- 0.03dB
Input Impedance (at 1kHz, BAL / SE) 50kΩ
Output Impedance BAL / SE 200Ω / 50Ω
Maximum Output Level BAL / SE 18Vrms / 9Vrms
BYPASS MODE
(Analog inputs, Tone / EQ / Subwoofers disabled)
Frequency Response
(-3dB, 50Ω source impedance)
1Hz – 2MHz
Harmonic Distortion
(measurement bandwidth: 90kHz)
<0.0004% at 1kHz
<0.0005% at 10kHz
<0.0006% at 20kHz
Intermodulation Distortion
(measurement bandwidth: 90kHz)
<0.001%
Maximum Input Level BAL / SE
(at 0dB gain)
9Vrms (+21.3dBu) /
4.5Vrms (+15.3dBu)
Signal-to-Noise Ratio (A wtd)
(22kHz BW, ref 9Vrms)
130dB (133dBA)
Crosstalk
(one channel undriven) (BAL / SE)
-143dB (100Hz), -140dB (1kHz),
-124dB (10kHz)
PHONO SECTION
(0dB gain, Bypass Mode, XLR2 in, Main XLR out)
RIAA Deviation (20Hz-20kHz) < 0.2dB
Selectable Load for
MM Type (47k II)
50pF, 100pF, 150pF, 200pF, 250pF,
300pF, 350pF, 400pF, 450pF
Selectable Load for MC
– Low Output
7.5Ω, 10Ω, 33Ω, 50Ω, 82Ω,
100Ω, 330Ω, 1kΩ
Load for MC – High Output 47kΩ
MM, MC – High Output
Gain (1kHz, 20Ω source impedance) 41.5dB
SNR (22kHz BW, ref 5mVrms in) 86dB (93dB A-wtd)
Max Input Level
(overload ref 5mVrms)
11dB (20Hz), 23dB (1kHz),
34dB (10kHz)
MC – LOW OUTPUT
Gain (1kHz, 20Ω source impedance, 1kΩ load) 60dB
SNR (20Hz-20kHz) 68dB (74dB A-wtd)
Max Input Level
(overload ref 0.5mVrms, 1kΩ load)
12dB (20Hz), 31dB (1kHz),
52dB (10kHz)
OVERALL DIMENSIONS
Width 17.50 in (444 mm)
Depth
(including connectors)
17.68 in (449 mm)
Height
(including feet)
4.78 in (121 mm)
WEIGHT
Gross Weight 41.2 lbs (18.7kg)
Net Weight 29.8 lbs (13.5kg)
OVERALL DIMENSIONS
Width
17.50 in (444 mm)
Depth
19.37 in (492 mm)
Height
8.74 in (222 mm)
WEIGHT
Gross Weight
111.6 lbs (50.6 kg)
Net Weight
97.7 lbs (44.3 kg)
OVERALL DIMENSIONS
Width
17.50 in (444 mm)
Depth
19.37 in (492 mm)
Height
8.74 in (222 mm)
WEIGHT
Gross Weight
116.4 lbs (52.8 kg)
Net Weight
102.3 lbs (46.4 kg)
DELTA
™
POWER AMPLIFIER
STEREO
DELTA
™
POWER AMPLIFIER
MONO
HEADPHONES
Power (nominal input, 0dB
gain, 32Ω load)
540mW/Ch
Output Impedance 6.8Ω
FILE FORMATS AND SAMPLE RATES SUPPORTED
USB-F 44.1k, 48k, 88.2k, 96k (iOS specic)
USB-B 32k, 44.1k, 48k, 88.2k, 96k, 176.4k,
192k, 352.8k, 384k
DSD64, DSD128, DSD256 (native –
requires Thesycon/Classe driver for
Windows) DSD64, (DoP)
Ethernet WAV, AIFF, ALAC, FLAC, WMA, AAC,
MP3, OGG_VORBIS (max 192k/24b)
DSD64, (DoP)
SPDIF
(opt, coax, AES / EBU)
PCM 32k, 44.1k, 48k, 88.2k, 96k,
176.4k, 192k / DSD64
INPUT / OUTPUT COMPLEMENT
ANALOG IN
BAL / XLR 2 pairs (XLR2 can be assigned as
BAL phono in)
SE / RCA 2 pairs
Phono RCA 1 pair
DIGITAL IN
HDMI 4* (HDMI 2.0b w/HDCP 2.2)
USB-F 1
USB-B 1
SPDIF Coaxial 3
SPDIF Optical 3
SPDIF AES / EBU 1
Ethernet 1
OUTPUTS
HDMI 1* (HDMI 2.0b w/HDCP 2.2)
BAL / XLR 5 (congurable: 2pairs+1sub,
1pair+1sub pair,…)
SE / RCA 5 (congurable: 2pairs+1sub,
1pair+1sub pair,…)
AUTOMATION
DC Triggers In / Out 2 sets
CAN Bus 1 set in / out
RS-232 over RJ-45 1
*With optional HDMI switching module
Frequency Response
(-3dB, 50Ω source impedance)
1Hz – 650kHz
Continuous Output Power
(at 1kHz, 0.1% THD+N)
35W/Ch @ 8Ω delivered in pure class A operation
250W/Ch @ 8Ω
500W/Ch @ 4Ω (with AC line held constant)
350W/Ch @ 2Ω (with AC line held constant)
Harmonic Distortion
(measurement bandwidth:
500kHz, 20Vrms in 4Ω or 8 Ω)
<0.0016% at 1kHz
<0.002% at 10kHz
<0.003% at 20kHz
Harmonic Distortion
(measurement bandwidth:
90kHz, 20Vrms in 4Ω or 8 Ω)
<0.0007% at 1kHz
<0.001% at 10kHz
<0.0025% at 20kHz
Peak Output Voltage
(nominal AC line)
129Vp-p into 8Ω
138Vp-p no load
Input Impedance
(at 1kHz, BAL / SE)
82kΩ
Voltage Gain
(at 1kHz, BAL / SE)
29dB
Intermodulation Distortion
(SMPTE 4:1) (8Ω or 4Ω, BAL / SE)
<0.0018%
Intermodulation Distortion
(CCIF) (8Ω or 4Ω, BAL / SE)
<0.004%
Signal-to-Noise Ratio
(A wtd in parenthesis) (22kHz BW)
118dB (120dBA)
Crosstalk
(one channel driven to 250W / 8Ω)
124dB (100Hz), 107dB (1kHz),
90dB (10kHz)
Slew Rate 75V / μs
Output Impedance 0.009Ω (100Hz), 0.009Ω (1kHz),
0.012Ω (10kHz)
Damping Factor
(at 1kHz, ref 8Ω)
850
Frequency Response
(-3dB, 50Ω source impedance)
1Hz – 650kHz
Continuous Output Power
(at 1kHz, 0.1% THD+N)
35W @ 8Ω delivered in pure class A operation
300W @ 8Ω
600W @ 4Ω
1000W @ 2Ω (with AC line held constant)
Harmonic Distortion
(measurement bandwidth:
500kHz, 25Vrms in 4Ω or 8 Ω)
<0.0016% at 1kHz
<0.0018% at 10kHz
<0.0028% at 20kHz
Harmonic Distortion
(measurement bandwidth:
90kHz, 25Vrms in 4Ω or 8 Ω)
<0.0005% at 1kHz
<0.0006% at 10kHz
<0.0015% at 20kHz
Peak Output Voltage
(nominal AC line)
148Vp-p into 8Ω
156Vp-p no load
Input Impedance
(at 1kHz, BAL / SE)
82kΩ
Voltage Gain
(at 1kHz, BAL / SE)
29dB
Intermodulation Distortion
(SMPTE 4:1) (8Ω or 4Ω, BAL / SE)
<0.001%
Intermodulation Distortion
(CCIF) (8Ω or 4Ω, BAL / SE)
<0.002%
Signal-to-Noise Ratio
(A wtd in parenthesis) (22kHz BW)
117dB (119.5dBA)
Slew Rate 72V / μs
Output Impedance 0.01Ω (100Hz), 0.011Ω (1kHz),
0.015Ω (10kHz)
Damping Factor
(at 1kHz, ref 8Ω)
700
All tests performed un-weighted using BAL input and 500kHz measurement bandwidth
(except when specied otherwise). Delta STEREO measurements made with both channels driven.
All tests performed un-weighted using BAL input and 500kHz measurement bandwidth
(except when specied otherwise). Delta STEREO measurements made with both channels driven.Specifications subject to change without notice.Specifications subject to change without notice. Specifications subject to change without notice.